Yes they did, BusyBee - but only when they got down to the final 5, I think.
I remember Will

, Darius, Hayley, Gareth and Zoe being together in the hotel suite last year, getting ready to go to some film premiere. If I recall correctly, Gareth and Zoe also had their mums with them as they were under 18.
As far as I'm aware they didn't start off with all 10 finalists staying together. Smacks a bit of copying the Fame Academy and Popstars the Rivals format to me!