How 'safe' are apartment/hotel safes?

We will be staying in a small apartment block and I was planning to rent a safe box when we get there as I'm taking all cash with me but after reading many comments on the various money related threads I'm beginning to wonder how wise this option is as so many people take travellers cheques 'to be on the safe side'.
Is there a problem with room/safe thefts at all? I'm really worried now but as I've already changed most of my spends up there's not a lot I can do about it
Is there a problem with room/safe thefts at all? I'm really worried now but as I've already changed most of my spends up there's not a lot I can do about it
