Favorite thing: We booked a tour through Tierra tours. We found them to be well organised, with very informative guides. Their prices are about average and sometimes cheaper than other tour offices. The tour was only USD18 plus C65 entrance fee to the national park and also includes a stop at Masaya market where a drink is included. Another stop is made at Caterina, a pueblo blanco with a beautiful view over Laguna de Apoyo. The tour is all day, you get back to Granada at about 4:30pm.