Pictures aren't representative - the flat is extremely dark even on a bright and sunny morning, and there is no ventilation and no open windows, not unless you leave the front door open. The front door is extremely finicky and bothersome to lock, and the bathroom effectively floods completely when you shower because the curtain does not extend to the floor.
The flat also does not appear to actually be anyone's house, but a commercial rental. Communication with the hosts was easy and they were helpful but also clearly employees, so there is absolutely reason to not hold the flat to a higher standard.