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Mercer Island, WA

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Koko Nail Studio

4.3 (33 reviews)
Open • 9:30 am - 6:30 pm

By appointment only

Updated 1 month ago

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Services - Koko Nail Studio

Manicure

Manicure and pedicure

Nail fill-in

Koko Nail Studio Photos

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Recommended Reviews - Koko Nail Studio

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Reviews With Photos

Truly the best nail salon! I've been coming here for a year - always consistent and great customer service

I've been coming here for a year and can truly say this is the best nail salon in the area! They're always consistent, there's a wide variety of colors/options and they have great customer service

my gel extensions manicure with a sparkling opal cat eye polish. Extensions are almond shape extra short
Natalie P.

this is my first time ever getting gel extensions. And it's been a couple years since I got my nails done. The nail salon is small and intimate. My nail lady did a superb job on my pedicure and manicure. I really enjoy having such long nails what's a lovely paint and shimmering cat eye effect, and the best part is it doesn't come off like those fake nails I used to do on special occasions. I want to make this a habit. I'll be coming back.

Gel mani
Katherine Y.

I was very happy to find a gem here on Mercer island. They use gel nail polish from Korea or Japan which is different from most nail salon. The staffs were nice and friendly. I will definitely be back.

Butter yellow Gel X with chrome
Sogol S.

They did a fantastic job with my Gel x manicure. I asked for butter yellow and they picked the perfect shade. Very clean and detail oriented. My manicure lasted a long time.

Bethann B.

Great experience - clean, fast and by appt. Better than my NYC usual spot. Will definitely go back

Gel manicure with art
Sami R.

Amy was amazing! First time at Koko and had a great experience, very relaxing, and did a great job with my nails. Already made an appt to go back. Didn't get a pedicure, but had a few in the salon when I got a manicure and they looked heavenly.

Bubbly polish

Welp. Sorry to share this was one of the worst mani and pedi I've ever had. I got the dazzle dry polish and it bubbled on both fingers and toes. After I pointed it out, the gal redid one thumb but that's it. Definitely not worth over $100! Pics of what they looked like right after I left

My uncut cuticles that she just drilled over instead of pushing down first leading it to bleed lol
Audrey C.

I booked a last minute appointment and they gave me someone who was clearly new or inexperienced. I don't understand salons that do this, I'm paying the same amount in services as everyone else in the store. If anything, it's more because I asked for builder gel. It's depressing when I come in to a store wanting to treat myself and am disappointed with the results and the treatment. The lady didn't even clean up my cuticles until I noticed she was about to start polishing. Then she hurt my middle finger making it bleed and I just wanted to leave in the middle of it so bad. I usually never complain but this was just outright disrespectful. It also just looks bad. At the end of my session, they then proceed to tell me builder gel is for longer natural nails instead of telling me beforehand as if they're trying to justify the poor quality work. After a week, even though it's builder gel it's starting to peel off from the cuticle side. Vibe was alright there was one young friendly lady but that was it. Everyone else was pretty hostile and quiet, definitely save yourselves the time and emotional turmoil of going here or explicitly ask for someone experienced.

can you believe they charged $105 for this

Here it is, my first one star review. I was here for my birthday nails because of all the good reviews but I walked away extremely disappointed. I was wrong for trusting this salon. Cried for a bit in my car for wasting $200 and 3 hours here. Would not trust this place to do nails for events because of the following reasons. First disappointment: see picture. Originally, this cost me $105! The pretty pictures you see here and on IG are a FALSE representation of their salon's skills. They only posted work from 1-2 ppl that are actually good. The nail tech had me lack essential art and nail skills: I had to correct multiple mistakes that she did not care/notice, such as having crooked lines, not following the design, cutting corners, etc. At the end of the third hour, I ran out of patience. She buffs my nails very roughly every time she makes a mistake/forgets something that ends up making my cuticles bleed and burn. Every time I spoke to her softly about what I wanted fixed, she would later speak in Vietnamese in bad tones. Like, really? This attitude for THIS SKILL for THIS PRICE? Please train your staff properly before charging us over $100 for something that looks this amateur. On my ring finger, you can see the white color coming through the design when it's supposed to be fully gold. My hand looks cheap for what I paid. At the end of my manicure, 7/10 of my fingers were burning either from the nail tech over-buffing or excess polish that got on my skin but wasn't cleaned up and was cured/burnt into my skin. Second disappointment: the lack of transparency with their pricing. They should have updated the customer the price change as the service goes on, rather than surprising you at check out. I had never once in my life asked to speak to the owner/manager as I did not want to be that person. Especially I saw all the nail techs here are minorities, and I wanted to support my people. However, this time, I did, when my total bill came out to $195 before the tip. The girl gave me a 10% discount because my cuticles were wounded. When I showed her my hand and said, "I've looked through your IG page, and you guys have very beautiful works. Can you take a look at this, and is this the same standard of service you feel okay with?" She just looked at me in silence. That said enough. Don't be scammed by Koko Nail Studio. I wish I had driven a little further to my old nail lady, who charges way less for better skills and service. Took these photos right after I got the service.

Sabrina H.

The best experience i've ever had at a nail salon! The salon was nicely decorated and calm, the staff was very kind and easy to communicate with, and they created the exact design I wanted. Even the 'basic' pedicure felt extremely luxurious. I am only getting my nails done at this salon from now on.

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3 months ago

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2 years ago

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Rika N.

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1 year ago

Awesome experience beautiful work and very relaxing!!! Highly recommend Koko Nail Salon

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3 years ago

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3 years ago

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3 years ago

The absolute best pedicure and manicure in the greater Seattle area. Get the Koko pedi it was amazing

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3 years ago

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3 years ago

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3 years ago

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3 years ago

Had a truly amazing pedicure massage here! Clean and relaxing. Glad to have this service on the Island

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3 years ago

Sparkling clean, very attentive service, no hard upscale, comfy recliners. There standard pedicure ($50)was one of the best I've had.

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3 years ago

Amazing nail salon! Very kind and thoughtful staff. I always leave very satisfied with the service!!

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2 years ago

My first experience was good and relaxing. The paint job was solid and they give a nice pedicure massage.

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3 years ago

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3 years ago

Best pedicure I've ever had. Easy online appointments. Reasonable prices. No reason to go elsewhere.

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3 years ago

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3 years ago

I had the BEST pedicure ever! Not only do my nails look fantastic, the experience was so relaxing. Booking my return visit already.

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Ask the Community - Koko Nail Studio

Review Highlights - Koko Nail Studio

“Kelsey is also thorough with her work and will check with you to make sure the colors and design are what you want.”

Mentioned in 2 reviews

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Some techs are better than others, and I've had decent gel manicures here, though they usually feel…read morerushed. The pedicures are especially rushed and not at all relaxing. I went here occasionally for last-minute appointments since they're always slow and usually able to get you in, but there are much better nail salons on the Island. What ultimately made me stop going was hearing the owner openly support ICE and make disparaging comments about immigrants - especially ironic given that she and most of her employees are Vietnamese immigrants themselves. That was more than enough for me to take my business elsewhere.

Mercer Nail & Spa has been inconsistent for me. The first pedicure I had here, in the summer of…read more2021, was really not good - the technician spent almost no time tidying up my feet, and then my polished toenails ended up being really bumpy instead of cute shiny candy chiclets. I didn't come back for over a year. Then a friend recommended a specific pedicurist, whom I've been going to. Each time, she's been very good and my feet have looked nice, with symmetric, well polished nails. Given that good experience, I invited a friend to the spa with me and we both had pedicures, but my favorite person was busy that day. And that time the pedicure also looked good, but the person that worked on me used the metal cuticle scraper to flatten out my toenails and they don't look so good now without polish and I have to wait for them to grow out to get them painted again. I really love that there's a nail salon here with wonderful manicurists and pedicurists - I'm so grateful for their services - but maybe they could work together to be a little more consistent in what a pedicure should be?

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This would have been a 5-star review, but one of my family members left less than satisfied with…read morethe price and quality of her pedicure. For myself, I was very happy! The salon was gorgeous, the staff was accommodating and friendly, and I loved my manicure and hot stone massage. The only minor issue was at the end--the technician rushed a bit and butchered what was supposed to be a cute bunny design on one acrylic nail. However, overall, the nails looked fantastic!

My mom took me here for my birthday. We both got manicures and pedicures. She got no polish and I…read moregot gel. Pro: Very pretty and relaxing shop. A nice touch to offer a drink. The staff were kind and quiet (I don't particularly enjoy small talk during salon services), and it seemed very popular. Con: A little strange that you fill out a slip like a dim sum place. The prices seem very reasonable, but it's an extra $20 for gel polish? I asked the person doing my pedicure to pay special attention to the ingrown part of my toenail-they did not. They used the electric nail file on my super thin nails and I was burned several times. After leaving, I noticed my mom's cuticles were bleeding which is dangerous because she's diabetic(this had me worried about her feet too) and my mom's nail broke the same day. My gel manicure was lifting the very next day. I probably won't be back. Too expensive without enough care.

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I've been coming to this nail spa for over a year now and it is just short of amazing!…read more First off, they really keep up the consistency of providing an amazing service every single time! There really is no miss (at least I haven't had one yet) Some staff are a bit better at certain things but overall they are all incredibly professional and accommodating. My personal favorite is Kali but I've also enjoyed being seen by whoever has availability which in my case were Anne and Tina and they were both great as well. Speaking of availability, they aren't that hard to get into which is so rare considering how great they are. I love the culture they've created at the spa, it's very soothing relaxing and quiet and must I say how refreshing it is not having to keep up the small talk during your service. As a busy mom of 2, I just love having to check out and be on my phone while getting pampered. And lastly, everything is eco friendly and organic with top notch ingredients. Place is beautiful in and out and they've been in busy for years so I don't see any of it changing considering the track record thus far. Definitely give them a try :)

I'm honestly sad I hadn't discovered this place sooner. This was the most relaxing pedicure I've…read moreever had--I could have fallen asleep right in the chair. The spa is calm, cool, and quiet, with beautifully soothing music. I truly appreciated the peaceful atmosphere, with no loud talking or shouting, just pure relaxation. This is definitely my new go-to spot. If you're looking for high-quality pedicure services in a serene environment, I highly recommend it. I haven't tried their other services yet, but I absolutely plan to. Thank you Tina for amazing service!

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I had my first visit to The Island Salon & Spa and was pleased…read more Amy Bode at the reception desk was helpful and went to great lengths over the phone to assist me with scheduling an appointment with the massage therapist. When I arrived for my appointment, she made me feel welcomed and answered any questions I had. Judy Frountelter came out and introduced herself and brought me to the massage room. In the massage room the music, lighting, temperature & decor were all conducive to relaxation. I was so tense due to stress but, felt it all vanishing almost as soon as I arrived. Judy is a great massage therapist and I felt great when I left and still feel relaxed and wonderful (the next day). She gives a great massage but, even more than that, she senses how much you want or don't want to chat. She matches your mood. I don't know if she is even aware of that. I would highly recommend Judy Frountelter to anyone looking for a massage therapist. The friendly, professional environment makes me want to check out the other various Salon services. I'll definitely be back.

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Glow Day Spa

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ok so this was my first time getting a head spa so i don't have much to compare it with. but i have…read moregotten massages before, and i'll compare it with that trying to figure out how to write this review without trauma dumping... basically, usually when i get massages, i feel vulnerable and scared about my body relaxing. but the woman at glow day spa made me feel so safe as she touched me. i was touched so gently (firm when she needed to be but still comforting somehow), and when i found myself relaxing, it wasn't scary at all. it was comforting. i just felt so safe on a more practical note, i did a head spa bc i was having a dry, itchy scalp, and i can definitely feel the difference i had no problem giving a 30% tip. i definitely want to come back and try a combo with a head spa and a massage!

She ruined my nails and I am still recovering. I like having my toes done, but in comparison to my…read morehands, I am not too picky because I only look at them in a distance. I debated not writing a review because this seems like an independent business, but ultimately, decided to warn others because I came here due to the good reviews. The nail tech drilled too deep into my actual toe nails and didn't stop until I winced. She said that she thought it was the gel polish. She eventually admitted that it was my nail, but instead of apologizing, she implied it was the fault of how my nails looked. I can overlook bad customer service and even mediocre quality, but this was beyond that. Weeks later and my toe nails are still recovering because she did it at the bottom. She did this to two of my toe nails and the one pictured is the worst; I'm censoring because I don't like showing my toes. I would actively not recommend.

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I came here on a recommendation. First, the guy was more into watching soccer on his ipad than…read moretrying to consult my hair concerns. I was in for a cut and color which he knew since I scheduled with him personally. I told him OVER and OVER not to put much gold in my hair or it'll turn orange, I thought we had that understood. After applying my color he said he'd be back in 20 minutes to pull it through the ends, he took his iPad and left. It must have been a really intense soccer game, 40 minutes later he came back and pulled the color through left it on about 20 mins and rinsed me out. After coming back to his station he tried to ignore that my roots were bright ORANGE, I said politely "its looking pretty warm and orange" he looked at me confused and said, you think so? Lets dry it and really see, he did and I said "you gave me hot roots". He then said, ok I'll put a toner on you we'll leave it on about 5 minutes, he did and left be by the shampoo area for about 15 mins. After rinsing it out it was all the same color, and he said So anything else? did you want a cut too? UH YA! thats what I was scheduled for and that was my main concern, but I guess with the soccer game he forgot. He kept saying ok so just a trim? maybe a half inch off? My hair was way over grown and I was again trying to explain my concerns to him about it needing shape and style and a good cut so it doesn't just hang there. I am pretty sure he only cut and inch off because here I am 3 weeks later and in desperate need of a hair cut!! I will say he did a great job of blowdrying my hair because when I left my hair looked good, it was shiny and smooth. But basically I paid $175 for orange hot roots, a mediocre haircut and a good blow dry. (could have paid a whole lot less at HairMasters) I don't think I'd return again. Still in search of a good stylist...

I literally JUST got home from Indulge. Which obviously means I have strong feelings about this…read moreplace or I wouldn't be writing this review. I have super thick long hair and wanted it lighter and flowy-er. (is that a word?) Amber cut my hair and she is fabulous. We all know it can be a little awkward when were getting our hair cut and conversing with our hairstylist. There was not one awkward moment. And she periodically asked me how she was doing just to make sure i liked the cut I was getting. I semi-recently moved back to Seattle and couldn't find anywhere I really liked. I am hooked on Indulge and am so happy I found a salon that works for me. It is so conveniently located on mercer island. They are so friendly right when you walk in the door. The only reason I gave it five stars is because I couldn't give it six.

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Koko Nail Studio - othersalons - Updated October 2026

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