We loved our stay at Tansel's flat.
The best thing about the property was the location - walking distance from all the most important places and public transport. They also provide us with a phone with local no & a balance of 15 TL which is really helpful
Tansel's mom also helped us in suggesting some places to eat - which was very nice and very economical . We would definitely stay here when we visit Istanbul again . Great hospitality, awesome city and very nice people.