We stayed in a very comfortable 1 bedroom apartment on c/ San Luis owned by Sevilla 5. The…read moreapartment was *exactly* as represented online - always a huge plus - and was very spacious. The large living room included a coffee table and large sofa, a small dining table with four chairs, ample storage (a huge closet), a television (admittedly, we never watched it so I'm not sure what the selection was like), and two french doors that opened onto the street. The well-sized kitchen came stocked with plates, bowls, silverware, basic pots and pans, and included a reliable dishwasher and washing machine (one hangs one's clothes on the roof to dry). The bedroom was cozy and the plus was that it faced an interior courtyard and so was very quiet. The apartment also came with reliable wifi, and a/c and heating (though you pay for the electricity when you leave at the rate of .20Euros per kilowatt used). The location was also absolutely fantastic; since we were staying nearly three months in Sevilla, we wanted to be a bit removed from Barrio Santa Cruz, and to live someplace more neighborhoody. C/San Luis was ideal - a few minutes walk to the Alameda de Hercules, hundreds of restaurants within a ten minute walk (including the fantastic Contenedor right down the street), easy to get to Santa Justa train station for trips, a taxi stand at the top of the street, and an easy walk to all of Sevilla's main cultural sights.
As for the company itself: a Sevilla 5 employee met us exactly when he said he would on the day we arrived in Sevilla, and he showed us around the apartment and left us with a key. We were a bit jet lagged so couldn't really soak in all the information and it was only after he left that I realized I had forgotten to ask a few questions (like, where do we throw away our trash?) He was always very accessible by email and phone, though I thought a basic informational document in the apartment might be useful. Similarly, the closet in the living room had lots of great stuff - a warm blanket for cooler nights, extra towels, a fan, a comforter - but not always in the most easily accessible way. A comprehensive list might make it easier for future guests to know what's around. The only other inconvenience is that you have to pay in cash (Euros) for your full stay in the apartment upon arrival.
In short: we really enjoyed the apartment; it was very comfortable for three months, the price was very reasonable (much cheaper than our much smaller 1BR in Washington DC), and the location couldn't be beat. We were a bit nervous about renting with Sevilla5 because we couldn't find that many reviews online and one never knows if the pictures on a website will correspond to reality - but this was EXACTLY as represented, and exceeded our expectations.