Ergin's Apartment is just wonderful. I was there with a friend of mine and we both had a very big bedroom. Its a 10 Minutes walk from Taksim street and there are a few little supermarkets just around the corner. We also enjoyed the balkony with a beautiful view to the Bosporus. Everything is very clean. The only minus point is that there is a mosque next to the apartment and they pray at 05.30 in the morning. But we will definetly come back if we are the next time in Istanbul.