Minutes away from Sofia, a nice tiny apartment for a short stay.
Keep in mind that the kitchen and bathroom are very small (or was not a problem for us) and there is a bright street light at night and a lot of windows in the main room that are not fully covered by curtains.
The biggest plus of this place is the host and communications. Cem was taking care of us and that was the most memorable experience from our short stay in Istanbul. Aranged taxi, tips and recommendations, booking of gamma and the hospitality in general.
I would stay here again with no doubts.