A very nice and interesting apartment with original frescos on the walls and ceiling. It gives you an impression of what living in the old district of Galata was like. It's a rational and spacious flat with clean and nice bathroom and kitchen. The only negative we can think of is that it's a bit cold during winter. The cleaning could also have been marginally better, but it was quite good, not at all to bad.
Communications was very effecient and we were met at the appartment on our destination time. Also, the location is prime - yet very quiet - in the nice Galata neighbourhood and with walking distance to Istiklal, Taksim, Karaköy, Sultanahmet, the ferries to Asia and to all of Beyoglu.
The wifi fell out at some point due to some power breakdown, but the hosts were quick to fix it.
Recomendable, but maybe not in the coldest winter days :)