Wow! It looks a lot like several 'assisted living' centers here (this is a retirement community). My Mom and Dad lived in one for a few months while she rehabbed hip replacement. The primary difference being yours are brick ours are stucco.
Nice find, even if creepy. Looks like they might be rebuilding. Close it, collect some insurance for the damage, re build, and charge 2x the fees. Seems normal to me...
Very wasteful closing all this, it's hardly old and not structurally unsafe. I wasn't going to fall through any floors in this one, which does make a change I suppose.