Ulas is very communicative host and my stay in his place was very great and I have visited restaurants and shops at Galataport which 5 minutes walk away from home, all you may need you can find there.
Taksim square and istiklal street just near by home also Took tram to go to Old city(Hagia Sophia etc.) House was very clean and tidy… There are several supermarkets close by, boutique stores near by apartment