I had a very pleasant stay with my brother in Dream Flats nr. 61 (top floor - six stairs) from 19-06-2014 until 23-06-2014. Arriving at Sabina Gokcen Airport all foreign nationalities need to buy a multiple entry visa (cash only, EURO 25,00, valid 90 days) before going through passport control. After that you can easily take the Havatas bus (13 TL) outside the airport building to Taksim square (1,5 hours travel). From Taksim square it's a 20 minute walk to the appartments. Late check in is easy and very comfortable. Guner will welcome you, shows you around the appartment and speaks very well English. There is no elevator in the building and there is no curfew. With the windows closed you don't hear the prayers (5 times a day). Beyoglu is a very nice neighborhood (don't forget to go out for dinner at Cezayir Sokak). Highly recommended is to visit neighborhood Moda (ferry Karakoy-Kadikoy 4 TL). All main sights are within 30-45 minutes walking distance. Don't forget to bring along good sneakers; Istanbul's streets are very steep!