I have never had a problem giving a hotel payment with Traveler's checks, assuming they're in the same currency as the country you're in. Sometimes, when I'm checking out of a hotel and I have too many Traveler's Checks left over (and don't want to sit around til the next trip) I use them towards the hotel bill.

If you're going to stay at a hotel that demands cash, ask beforehand if they'll take a TC in their currency. I can't imagine a hotel that would not.

Candice NYC