Fancy room at Los Lagos right at the base of Volcan Arenal. The room was expensive ($99 high season, $69 low season), but it included direct access to the volcano, natural thermal pool and jacuzzi, waterslides (!), crocodile, butterfly and frog farms and reasonably priced, very good restaurants. This is definitely worth the cash for one night if you plan to take a tour to the volcano and go to thermal pools anyway. We were able to keep watch all night for a clear view of the volcano from our room.