I've been to this practice several times, and each time have had a positive experience. Definitely…read moremy go-to in Hamburg.
I've only ever been treated here for GP-related things (everything from a blood test to a bad cold). Almost every time I've gone I've met with a different doctor, and they were all very friendly, helpful, and had a way of putting me at ease. There was even a time when I nearly fainted while getting my blood drawn, and (though quite embarrassing), two people rushed in to bring me water and chocolate, and then carried me to a room to lie down. Even though I felt fine after 15 minutes, they insisted I stay longer and kept checking in on me. I felt very taken care of can't imagine a lot of other places that would have done the same.
If there were ever anything they couldn't directly diagnose, they gave me the names of several specialists and a quick referral slip.
What's also nice is the option to book an appointment online. Especially if your German isn't great (note: I'm not sure if they have English-speaking doctors, but it would surprise me if they didn't), it's nice to be able to look up the right words and choose a time and date that suit you best.
The practice is also located in a beautiful, classic Hamburg building and the space is very nice and clean, with high ceilings and a spacious waiting area.