I stayed for 8 days and had a good experience. The room was cleaned daily while I was out, and clean towels, shampoo and soap were available. There is a kitchen area which is nice if you prefer to make food at home, but you are only minutes from all the restaurants on Istiklal Caddesi. Metro and bus lines, as well as dolmus, and the airport Havabus are all nearby.
The room has a nice air conditioner. The city can be noisy, but overall it gets quiet by midnight. If you want to take a nap or are very sensitive to noise, you can turn on the A/C which mostly drowns it out. I didn't have any problems myself.