Well, it looks like an office building. If it were a school or detention center, or any building meant for high public traffic, the corridor would be wider and probably not carpeted.
The heating unit looks European and the instructions on the emergency exit are only in English. So probably in Great Britain.
Really? For all I can tell, the lighted sign could say “IIII” and the green sign on the door might be “Pugah You Yo eguh.” I suppose “Push bar to open” makes more sense, but I couldn’t swear that’s what it says.
That was my first thought too, American medical office complex (probably not an actual hospital). It also reminds me a bit of the faculty offices in a lower tier university I worked in once, but really anywhere where people need private offices but are not pulling in enough for anything luxurious.
No question it is European, given the radiator and signs. Most likely Britain, with the blue signs on each door.
The doors are too close together to be a hotel, and notice that most of them swing out. That’s not common for hotels. It isn’t a hospital because the hallway is too narrow. It has to be some sort of office.