This is a bit of a silly topic.
The environment in Black Plague was made so that you feel isolation and that no one is around, thats why most places and rooms dont feel welcoming.
If theres a place i feel "safe" its the library and that room you enter after the sewers before going to the residential corridors.
I feel that that room is some kind of "nice", since the bathroom is actually intact, theres a little computer room with a mattress that according to Phillip smells "better them the rest", a pc and a television. If i was him, i would stay in there forever.
Are there other places like this one?