Mine used to sleep curled up on my bed either on the side or at the bottom (which good little cats should, apart from most didn't get the memo).
She's started driving me a bit crazy now though as I sleep on my side and she's taken to balancing on my hip. I'm really small so this necessitates some claw readjustment to keep her position, I scream, put her in sitting room, she scrabbles non stop and I worry she'll damage the door (rental), I let her out and it's claw/hip thing repeat repeat :(
Do you let your cat in the bedroom? Are they well behaved? Do they actually use a designated cat bed? Mine won't