Olga:
I stayed at Olga's place for 2 nights. She's a very nice lady that could trust me well enough to leave the house all for me for 1 night due to unexpected circumstances.
The location was good. The nearest metro station is approx. 3 minutes walking distance and from there only 2 stations to get to the city center and main attractions.
The room and bathroom were clean. The room might be a bit too small, but it's good for 2 nights stay. The bed in the room wasn't very comfortable, but okay for a short stay.
The wifi signal was a bit weak, but I guess because the room is in the 2nd floor, so that might be the reason.
All in all, it was a good stay and Olga is a nice person who gave clear instructions about how to reach her place.