It's a nicely furnished flat in a beautiful old building, with big windows and a balcony. Shops, cafes, train and bus stops are close by, and there's a beautiful big park just a few minutes away. Also a big plus is a lift, as the flat is in the 4th floor.
I haven't met Nina in person, but communication went well via email and whatsapp.
The downside was that we were there during a heat wave, and as the flat is east-facing, it got very hot already early in the morning. But not much can be done about that (except perhaps getting more curtains or blinds). Also, it would have been nice to have some space in the closet instead of living out of our suitcase for one month.