Berna's apartment was a great base for our short trip to Istanbul. It's minutes walk from the shops, restaurants and nightlife around Taksim Sqaure and only 20 minutes by train to the old town and all the historic sites.
The apartment is just as described and pictured, spotlessly clean and the 2 outdoor terraces were great. Communication with the host was quick and she checked in on us a few times during our stay but was never intrusive. We thoroughly enjoyed our 4 nights and would stay again if we ever return to Istanbul. No hesitation in recommending to others as long as you don't mind the 4 flights of stairs!