This is a fantastic apartment in the perfect location. Central to most everything in Istanbul (20 minute walk to Karakoy, 30 minutes to Sisli, 5 minutes to Galata).
The apartment was very nicely appointed with cool artwork, a great stove and appliances, as well as hot water and AC.
The only negatives during our stay was a few hours of lost power and internet due to someone working in the building, a frenzy of mosquitos inside that we couldn't seem to get rid of, a strong smell of natural gas and a leak in the bathroom that had a puddle most of the time we were there.
Didem was a good host and provided us with everything we needed. I'd recommend staying here.