If I have a party member with a healing spell, would there be any reason to rest in anything better than a Peasant's room at an Inn? A couple additional questions about Inn's:

As far as I can find, in BG1, the 4 different rooms will heal 1, 2, 3, and 4 HP respectively... Is that per night, or per hour?  And is it for the whole party, or per party member?  Googling didn't specify.

And is this the same way Inns work in BG2?