Natural mineral hot springs on the Rincon de la Vieja Lodge property. There are a number of undeveloped hot springs where you can still soak in solitude under the canopy midway through a hike in the rainforest. If you want venicle access and a few more amenities with your pool both Hacienda Guachipelin and Canyon de la Vieja Lodge have outdoor rustic spas with massage and mud bath treatments available. Another step up the lavishness scale Anáhuac Spa at Borinquen Mountain Resort aspires to Zen tranquility. North of Rincon the Blue River Resort is a favortie with Guanacaste beach goers and Rio Perdido one volcano over on the slopes of Miravalles near Fortuna de Bagaces is the latest luxury resort developed around a hot water river.