Translation of watchdog in Spanish

We agreed to stay in the room with no windows and unpacked our bags. We wanted to have dinner and went out to a Sushi restaurant a friend told us about. It was a great place with great atmosphere.
I took her down to the bathroom, and her pants and shoes were full of vomit. We were sure that it was not alcohol, but that there was something wrong with the food we had at this "nice" restaurant.
At the third or fourth guesthouse we finally took a room. Of course the hot water would not work, and luckily we were upgraded to a terrific, huge room with balcony and garden. It was a very charming place.