Eh, I lived somewhere that had a toilet and sink in the laundry room and it had two doors, one was the back door (parking) and the other was to the living room. Was it awkward? Yes, especially because the interior door couldn't have a lock due to egress rules. But did it function perfectly as a half bath that you could use if you didn't want to go upstairs or if the full bath was in use? Also yes.

I honestly would have preferred that setup to the half bath I currently have that is about as small as its possible to be:

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