The flat is really nice and it looks like in the photos. The rooms have climate, the kitchen and bathroom aren't in a high standard but there were clean and sufficient to prepare some meals and take a few showers a day. The kithen was well-equipped. The best thing is a terrace, where we spent almost all the time when we didn't go out, just chilling, lying or sitting :)
The flat is close enough to get to the center on foot, but is also close to bus stops and within walking distance to metro station and markets. There is also a street market on Wednesdays just one street to the West :) Marina is a very nice and helpful person, she was waiting for us until 1:00 am and we were in touch all the time