For the bathroom, I would have a conventional flat ceiling.
for the bedrom, I would give it a vaulted ceiling, but not just right up to the extreme top of the roof, that would leave a lopsided vaulted ceiling if you see what I mean.
Instead, on the wall between a bedroom and bathroom, I would start another "false" vaulted ceiling starting at the same level and going up at the same angle to meet the main roof. like this: