I was concerned at the lack of ventilation in the room where I slept. If you opened the main window, you didn’t have any protection from burglary, and there were no other windows to open. The air conditioners don’t bring in fresh air from outside, so it WAS a concern, due how small the room is. When I stayed in the room a couple of hours, walked out for awhile then came back, it smelt stale from breathing in there.
Please consider bars on the opening window, plus being able to open a small window in the bathroom so there is cross ventilation. Cheerrs