Bedbugs. My daughter and I discovered bugs in our bed on our first night there. While I am not an entomologist, they were certainly bugs and there were a bug casings in the sheets of both beds. This discovery was at 11:30 at night, and ULIV was remarkably unhelpful in our situation. We had to find a hotel in Mexico City at 1 AM. The manager of the building said he would refund our money, but we had to do it through Expedia. In the end, they refunded the nights, we were not there, but charged us for our first night!! it was like finding glass in your entrée at a restaurant, and instead of being comped for your meal, the restaurant charges you for the glass of wine you had when you came in! Horrible experience, with a very unsatisfactory conclusion.