We were a family of 6 adults on holiday in Istanbul for 7 nights. We had a wonderful time. Elif and Marco's appartment is excellent location, walking distance to several of the main sights and to the tram. Felt very safe; useful grocery shop downstairs, and just round the corner from the Araste bazaar for last minute shopping!
Elif and Marco were very helpful and prompt in responding to my queries, and were at the appartment on our arrival to show us around. They also organised an airport shuttle for us, which was helpful.
The appartment has a very warm and homely feel, with stylish antique furniture and furnishings. Well-equipped.
I would highly recommend their appartment if you are looking for a place in Sultanahmet.