I highly recommend anyone traveling to Istanbul to stay at Fatih's lovely apartment located only minutes away from the Bayoglu area of Istanbul. For those that have not done their research, Bayoglu is the social life epicenter of Istanbul with crowds of people wandering down a street lined with restaurants, shops, bar, clubs, etc. Location-wise, this flat is easily accessible by public transport from the airport and quite within reasonable walking distance if you are active and wouldn't mind walking 5-10km daily to save on public transportation costs.
Fatih is a great host. He meets you outside your final tram stop so that you won't have to figure out how the address system works in Istanbul. He can be reasonably reached via e-mail if ever needed.
The apartment itself is basic but offers everything you need to spend a few days in Istanbul. Although I did not make use of the hotplate and kitchenware, the cable tv is a plus and same with the washer.