When we have just arrived the apartment, we realised there is a problem on the window (which it could not be closed normally) but the immediate reply is that it is the way of the window opens... and we found out there is a guest stayed in Ben's house earlier complained exactly the same a month before but then the window is still like this....
But then Ben sent someone to check the window and they found out it really has some problems then a engineer came and fixed so that we won't feel cold even there is a heater.
The room itself is modern, yet a bit small then i expected.