Ponce is a great small city. Before we went there, our tour book said that it had more museums per capita than any other city in the world. A lot of them are historic homes and only one is an art museum, but there are a lot of traditional museums there. The Museum of Puerto Rican Music was great. We were the only ones there when we went. They asked us at the ticket desk if we read Spanish and when we said no, they gave us a guided tour. The guide played a lot of the instruments as part of the tour. It was great. Edit: You can tell Ponce has a lot of museums when Tripadvisor has an article on the five best museums and Yelp has one on the 10 best museums, for a city of 166K.