We were two couples who were falling 2013 May.
+ The apartment is really spacious, of course enough for us.
+ Good views from the windows
+ Situation is very good. 30 meters to Galata Tower.
- The basic problem: a 5th floor without elevator.
- The street entrance to the building is dark at night and dirty.
- The room to the street is quite noisy. Seagulls will wake up to you at first hour...
- Cleaning: regular, specially in the kitchen.

Conclusion: my personal opinion is that 195 € per night that we paid is too much expensive, I would not rent this apartment again for this prize. Perhaps 120-150 € would be a reasonable and just prize.