Hikmet's apartment was a great base for our stay in Istanbul. It is in a quiet residential area in the old town, close to restaurants, supermarkets and the tram. It is a short walk (10-15 minutes) to many of the main sights: Blue Mosque, Aya Sofya, Topkapi Palace and the Grand Bazaar.
Hikmet organised for us to be collected from the airport (€25) and provided a very warm welcome on our arrival. He offered us a complementary Turkish breakfast on his rooftop terrace on our 2nd morning, which we enjoyed very much.
The apartment had plenty of room for our family of four. It was a little rough around the edges in places, but it was clean, the beds were comfortable, and the air conditioning kept us cool from the heat of the summer. The kitchen had almost everything we needed - a collander or strainer for pasta would have been handy.
Overall, the apartment was great value for money and we would definitely recommend it to others.