We met Sylwia when we arrived. She was nice and showed us the room. The room itself is very nice, clean and quiet. Except for a kind of waterpump in the wall or something. It starts to click if people upstairs turn on the water. We couldn't sleep without ear plugs. Big plus is the private bathroom. Really great! The kitchen outside the room is small but functional. It is shared.
The house is in a safe area. We were in and out at all times and it always felt really safe. The walk to the subway takes 10-15.
I would recommend you to stay with Sylwia.