Personally I don't think it's that great of an idea. It really depends on your workers and their family logistics. I imagine a few spouses probably wouldn't like the idea. It really does depend on how close you all are. For example, do you all spend time outside of work (not including Christmas party etc?). If you don't then to be honest I think it'd be a bit weird, if you do and you're more like friends then just work colleagues then I say go for it. Are you and your DH paying for it all?
I also wouldn't be happy sharing a bed with someone. I also wouldn't be that happy having a blow up bed on the floor. In fact I probably wouldn't want to share a room with many people as I hate snoring and I can't sleep through it lol but that'd be my issue.