Aloha,

In Hawaii a hotel room is a legal place to have a gun.

Not so outside. Hawaii is a state that Does NOT honor any other state's CCW permit. Chiefs here Do NOT issue CCW permits at all.

Most hotel rooms have small safes for guests, some do have a charge.

I tell visiting friends IF you have to leave anything in the room that does NOT fit in the safe, leave it under a pile of Obviously very Dirty laundry.

Also same in the rental car. Zip lock bag under used swim gear and wet
towels. Or carry with you. DO NOT leave anything of value in a rental car here in Hawaii.
Our crooks know a rental and can get in/out in seconds.