Dave and Linda - consider yourselves booked a bedroom: Mumblin Len and tribe have bed 1, Rima and lady will get bumped to bed 3 since they can I think manage with the double futon (and anyway they might be bringing campervan), so you get my daughter's bedroom with the parisian style (double) iron bedstead (shades of "art" movies in the 60s) but I think she has taken the handcufs to Nottingham! I think you NEED the bigger bedroom more.

The small bedroom (inflatable double mattress on the floor or single cheap put-u-down) unbooked so far.

That leaves: -

the caravan (double or twin)

the long sofa

the short sofa

the put-u-down on the top landing (big landing, honestly bedroom sized, but a bit public!)

floors, camp bed (single) two or three inflatable singles and there might be another inflatable double, a very large (almost double mattress size) bit of 4 inch foam, a single foam mattress, 3 or 4 camping kipmats.

Own sleeping bags would be handy, as I think I only have about 5 spare....