Without context, I'd guess that "free" meant "unoccupied" here.
However, it can also mean "gratis, costing no money", and could mean that in this sentence.
Yes, absolutely.So in such a case, it's better to use "vacant", because the word is unequivocal?
See above. Questions always require subject-verb inversion.So in such a case, is it[STRIKE]'s[/STRIKE] better to use "vacant", because the word is unequivocal?
So in such a case, it's better to use "vacant", because the word is unequivocal?
Or "empty beds".