Thought I left a charger at Hyatt Santa Clara.
Was back there again following week. Asked at desk. As has been noted, they came out with a BIG box full of chargers. Mine wasn't there, but they said just take one that works. (Found mine following week buried deep in my briefcase.)
Re: postage. Left cell phone at Hyatt Mainz. They mailed it back to the US and charged me postage, all of four bucks.