Loved it! I have hiked 8 volcanoes in Nicaragua and this is one of the best. Not only for the starkness of the landscape, the unique feeling of sulfur twirling in your hair near the funnels, but the rush of volcano boarding back down! I would recommend going with Quetzal Trekkers because then you get to board down 2x - not sure it would be worth the guide money otherwise. Their guides are super chill and the proceeds go to a well needed cause.