I'm assuming here that you've invested the $15 and bought a security cable for your laptop. This is a braided steel cable that locks into a slot on the laptop and prevents it from being removed. If you've got a lock, then it's unlikely that it will be stolen, though the hotel would not be responsible if it were. We bring ours, but make sure to back it up before each trip (a good habit to get into in any case).
Walt