A very interesting start; the non-simple square approach gives it character.

Out of curiosity, what is the time period supposed to be? Lockers seem relatively modern but stables and "towers" seem older.

Assuming vaguely Medievalish: do they have another source of water? Having an indoor well (at least, I think that is a well) is very nice and a great idea of an inn... but the kitchen needs water. So they'd be bucketing it through the main room and across an entry way (it looks like the top of the map is the street side, so the main entry way too). Not very practical, it would seem.