first off, here's a link to the curriculum for the dentistry prog Uniwersytet Medyczny w Lublinie : Departments and Courses
I'm in the 4yr MD myself, so I can't tell you too many specifics as to what the courses look like vs ours, etc. Usually the dean's office is not too pushy as to giving you course exemptions, so I figure they'd be okay with you skipping them (since you did them in MD vs the majority omiting ones for UG credit).
The dorms are apartments, so there's an in-suite bathroom, washing machine and kitchen(ette). Since they're apts the rooms usually vary significantly as to size, shape but from what I understand the rent changes based on room size. From others I have heard that getting apts yourself will cost you less in the long run however, just FYI.
Hope that helps