The place is really nice, clean and quiet.
The neigborhood is quiet convenient to discover the city as it's near two different metro lines. You have also lots of walking distance places for shopping and eating!
I didn't met Janina for she was busy, but she left a clean place and even a fridge with some food inside!!
Be careful about beds, there is one big for 2 and a smaller one (kid size).
Anyhow, we were four adults traveling to party and we actually accommodate with that without problems (hopefully you won't sleep much).
I totally recommend this place!