MyFishFinder.com Just like iceshanty but warmer
I have the rectangular Quick Fish 6 and have overnighted with it. It works fine if you are sleeping alone. It didn't hold much more than one cot with a little extra room for a buddy heater, cooler and a chair to fish. My cot is a HUGE XL Alps mountaineering cot. So a smaller one may give you more room. If you are overnighting with a buddy, I would get the hex shape, unless you want to go the bunk-bed cot route. It would be nice in that case to have an extra hub for fishing and using the rectangular one for sleeping. There was a post on this topic a while back by FGSteve with a wealth of info. I highly recommend reading it. Give yourself an hour, it's pretty lengthy reading.
How about something to save on floor space, like this?
Check this thread out. Lots of good info and some trial and error on things for overnightshttps://www.iceshanty.com/ice_fishing/index.php?topic=325954.msg3587572#msg3587572