'Dwelling' sounds deeply depressing to me - to 'dwell' somewhere sounds like to simply exist in a space rather than actually living and thriving there. To 'dwell' on a problem means to sit and think quietly. And 'unit' to me sounds cookie-cutter and impersonal. This is your unit, just like everyone else's. Sit in your assigned unit and dwell in silence, human.

I guess 'dwelling' and 'unit' don't have all those connotations to you?

Why not just say 'home'? Even 'Accessory Home'.