There are two very good things to be said about this hotel.
1) The location is amazing. Super central, yet quiet at night. Galata is a beautiful neighbourhood with lots of cute shops and cafés.
2) One of the receptionists was very kind and welcoming, and his English skills were good.
The not so good stuff: if you're allergic to dust this is not the place for you. The floor underneath the bed had probably not been cleaned for over a year. I asked the hotel staff twice if they could have someone clean it, but it never happened. Underneath the bed, I found face masks, a dust layer so thick it could be a carpet and a rotten apple covered in mould. Not cool. The other receptionist did not speak as good English, and wasn't there for my checkout in the morning, even though we had agreed the night before that he would be there.
I think this place is good if you're only staying for a night and don't mind dust, but unfortunately I don't think I will come back here, in spite of the great location and nice receptionist.