It really depends on bed sharing. A 1 bed that sleeps 5 natively will have a king bed, a queen sleeper of some kind and a single. So you would need people sharing the king and queen.
How friendly are you?
Bedrooms with some variant of this arrangement can be found at AKV, BLT, RIV, SSR, OKW and VGF.
AKV and BLT have an extra bathroom.