Hikmet's place is located very conveniently in Sultanahmet just few minutes walk away from major attractions like Hagia Sophia, Blue Mosque, Topkaki etc. It is also near (5mins walk) to the tram station to get to places which cannot be covered by foot. Hikmet and his friend were very hospitable and we felt very welcome. He arranged for flight pick ups and drops for us and also was accessible for any issues we had. We went in December and the heater kept us very warm. He runs a transport agency next door and so he might be able to arrange for tours if someone wishes. We had already done our own arrangements for Cappadocia and so we didn't get a chance to use his agency. People in Istanbul and other parts of Turkey are very welcoming and we had a great time here.