Ihsan is a very nice host, responsive, and helps you out in case of need. The house is clean, well located, and contains everything as mentioned.
WiFi quality is very good, security is excellent (building door with a code, and home door is solid and can be locked with 2 different keys, common building entrance have cameras all around).
Markets, restaurants, coffees are all very close, and are open even at late night.
Bus stations , metros, tramways are very close (5 minutes walk) and can connect you with almost all Istanbul (a close bus comes/goes directly from/to Istanbul airport).