Great hosts! Enes's cousin welcomed us and helped to move the luggage into the house. We were a big group of 5 families and the locations was great as it is a few minutes walk to Taksim square and Istiklal avenue. You can find good foods and shop around easily. They offered helps for getting vans -- getting taxis and vans are nightmares in Istanbul plus they may drive you around to charge you more.
They were also very helpful for places to eat and shopping centers.
I would definitely go back there and strongly recommend them to my friends who want to visit Istanbul!