Don’t worry, I tipped with cash as well! However, we had an extra chocolate bar (thanks Rene) and a book that was recently finished that we left for housekeeping along with our normal tip. I generally tip around $2 per day for good service when traveling on my own in the US, but more if the service is exceptional or we have multiple guests per room. I was surprised this morning when the housekeeping manager came and found us in the lobby to thank us for the tip. She said at the hotel we were staying at (Cheyenne Mountain Resort) about 70% of guests do not tip at all. So I ask, what are your tipping practices and recommendations in the US? What about when traveling abroad?