Honestly for me the smaller fullsize bed is easier to get out of for bathroom visits - there is less crawling required to get off the bed.
But as mentioned, corner beds are a pain to make.
I have mild claustrophobia and some corner beds are too confined for me in general.
I sleep in the cabover bed and other than making the bed, I prefer it. But mine is a 1975 and has the windows on all three sides of the cabover so I don't feel claustrophobic.
I suggest visiting a couple RVs on the lot and try climbing out of the beds. Go with what works best for you.
1975 American Clipper RV with Dodge 360 (photo in profile)
1998 American Clipper Fold n Roll Folding Trailer
Both born in Morgan Hill, CA to Irv Perch (Daddy of the Aristocrat trailers)