Great way to visit a city i would say the best waysince you can stop when you want and this at a very good price! Wouls recommend.sue from montreal canada
The Albufera park was just a slow boat ride in a lake, to see nature. Nothing more than that, we saw a couple of egrets and birds. Boat driver spoke only Spanish. If you have ever seen the Everglades in Florida it looks just like that. Trip was not worth the time, it is better to use your time in the city sights, if you are staying a short time.
Valencia hop-on hop-off line is very long. Make sure what you want to see before you go. I suggest Viator providing hop-on hop-off maps BEFORE each excursion so we know what to expect. Also Hop-on hop-off should set up a desk right at the ship exit to answer the questions and give directions. The morning driver was really nice and helpful while the afternoon driver is rude and arrogant. He could understand English pretty well but refused to answer question if we couldn't speak Spanish or Italian to him. He put his one foot up next to the ticket box and checked his smart phone whenever he stopped while everyone on the bus had to wait. Albufera Natural Park Tour took a big chunk of the day and all we really saw was the rice field and sit on a 1/2 boat trip. Driver didn't speak any English so it's very difficult to communicate. We could have used that time to see more of Valencia.