Tamer is a very kind-hearted host. He treated us as his friends (even offered us his scooter) and gave us great insider tips for amazing local restaurants.
The apartment has everything one needs (even a cat - Chico, who is amazing :))
The location is great. Hint: Only 5-10 mins from the flat you have a great small park with a great view of Istanbul from above.
I can only recommend staying at Tamer's place :)