HUGE problems with the water temperature in the shower, there is only a few amount of hot water available, very late at night or very early in the morning. If there is more than one person that wants to use the shower, this could be an issue.
There where also some electricity problems, apparently when there are too much items connected (cellular phone charging, tv and hair dryer for example) the electric went down, we had to turn off everything, including the lights if not, the hair dryer couldn't be used.
When we arrived, on time, nobody was there. 15 minutes then (it was raining) we went to a supermarket a block away and came back, waited 5 minutes and after this, the host appeared. They/she where/was supposedly waiting for us in the apartment, but they knew we could only talk via WiFi.
The apartment looks bigger in the photos, it is nice and very well situated, but smaller than it looks.