First of all, the apartment has NO internet, contrary to what it says on the listing. There is a device you need to go somewhere else to charge, but if you are there for a short time, we didnt want to waste it by finding out where this place was, and going there to get internet charged into a device. Paul was a really nice guy. He setted up the water boost for us. We didnt touch anything, as instructed, and still, we got only 2 quick hot showers. The water never got hot again in our whole stay, (2 days) so we had to take cold showers the next day, and since we didnt have internet at the flat (or roaming in our phones) we couldnt reach Paul to tell him about this.
And this is a pitty, because the apartment is really nice and well located, in a nice and safe area, at 15 min walking distance from the city centre. But because of the cold water and no internet, I wouldnt stay there again.