1) 3 stories, counting the ground floor.
2) The roof of the north building is on an higher elevation even on the roof - so about 25 yards?
3) A waist-high stone "lip" of the roof. Yes, it's the perimeter.
4) 4 windows on each side of floors 2 and 3. The bottom floor has less windows, none of them are open or even not boarded up.
5) You're not sure, could be either. That would require a closer look.
6) The hotel is square. All sides seem pretty equal.
7) Not really.
8) You do not see any. Perhaps they were removed?
9) The backpacks are easily seen from outside the rooms, through the doorways. Going to a window at a far end will get you away enough to avoid danger.