Alex and Martin were really helpful. I made a mistake and we arrived one day earlier than what I've told them. But they found a solution very quickly. (at 21:00)
The first night, the flat was dirty and cold as they expected us the next day. The next day, flat was cleaned and it was warm again.
But there was a keen smell during our whole stay, it was ok because you get used to quickly but it was disturbing when you entered the flat everytime.
I'm sure Alex and Martin will take care of it on the long run.