The communication.
Superb! Constantina replied so fast for every question and was very accommodating to my changed plans. She was also willing to bend the check out for a few hours until my flight. That was really nice.
The apartment.
It was actually nicer and bigger than in the pictures. Neighborhood is very nice and calm, a big park is very close. Bus link is a two minute walk away, but metro little further. Very good for short stay. It is on the 4th floor, so prepare for stairs.
Kitchen is not very well equipped, so do not plan to be cooking a lot! The scent of the cleaning or scented candles was a little bit too much for me, but maybe I'm a little sensitive for strong scents.