Just a couple of suggestions. It's a bit jarring with the external doors opening but not being aloud through. Maybe chuck a debris pile or just some inoperable doors so that it doesn't look like you
should be able to get out
Also the things jutting out from the walls everywhere (light fixtures, cupboards etc) are easy to get stuck on. I don't know if it's intentional or not (just ignore if it is

) but maybe they should be able to be passed through, or (if it's possible, I've never made a map, so I'm not sure) round off the hit boxes so you slide around them rather than getting caught on them? If that makes sense
Great smallish map. I will definitely keep playing it on our server, looking forward to more possible updates