Purun has nice big flat in quiet Besiktas area, near Dolmabahce Palace. It takes about 10 minutes to get to Taksim by the small buses and about 20-30 minutes to get to Karakoy (first on foot, then by the tramway).
Purun and her boyfriend were very friendly and told us very useful things about the city. The flat by itself is comfortable, light, ideal place to live in Istanbul.