I had an overnight stay in Istanbul and wanted a hotel close to the airport. White Palace Hotel is a very good choice if you're looking for a reasonably priced hotel close to the airport.
I paid 50 euros for one night. The hotel was very clean and well maintained. The room I got was large by European budget standards, with a separate sleeping area. Most importantly, it was very quiet, with no noise at night so I could get a good night's sleep.
The staff was very friendly.
The only problem was that the wifi password they gave me did not work, so I had no wifi only room. I let the staff know about this and they came upstairs and verified it didn't work. Also, it was slightly warm at night and I couldn't find any controls for air conditioning--not sure if they have it.
The hotel is a very short walk from the Ataköy M1 subway station. However, please be advised that Apple Maps (and I believe Google Maps also) have this hotel about three blocks from its actual location. I walked around for a it an hour before I found it. read more