I've had my baby Skampi for three weeks he is 11 weeks old and he sleeps either on my bed or my son's bed (he is 13)
He has never had an "accident" on either bed he just whines to get down & goes straight to his newspaper then comes back to bed. He stays in bed sleeping as long as I do even if I have a lie in! It's lovely having him on my bed and it's a fight beween me & my son as to who will have him each night.
I did buy a crate & tried it but he hates it. He is newspaper trained now (still having the odd accident each day tho)