I've noticed that the safes are bigger at the Deluxe resorts than the ones at the Moderates. We've also used safes that had keys and ones that had those 4 digit combination locks (GF).
1. Good idea
2. The threat is not from housekeeping taking it as much as someone else seeing it through the window (or just randomly trying) and waiting till housekeeping comes and then playing the old "just gotta grab something real quick, have a nice day."
3. The safes are about 4 inches deep and maybe 10 inches wide and 8 inches high.
4. Some resorts have safe deposit boxes at the front desk (I know CR and Poly do.)
Have fun.
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