8 Best Hotels in Arenal, Monteverde, and the Northern Lowlands, Costa Rica

Nestled among 13½ acres of rolling hills nearly 3 km (2 miles) from town, luxury tree houses have wraparound decks, driftwood headboards, tree-stump nightstands, waterfall showers, and skylight ceilings, ultimately fading the line between nature and decor. Each unit is unique in design, but all are built of wood, stone, and glass and have minibars, lounge areas, and private entrances. The spacious two-bedroom Rivendell tree house looks more like a two-story chalet cupped in the branches. Eden has an indoor Jacuzzi, and Neverland—built over a koi pond—has floor-to-ceiling windows with views over the hills to the Gulf of Nicoya. Breakfast and tea are served in a lovely solarium in the main house, which also has two standard guest rooms. The rules here are simple: no shoes in the house, no working during your stay, and dessert is served before dinner promptly at 5 (the coconut flan is to die for). The property's views are among Monteverde’s best, and there are plenty of quiet spots for reflection and a network of hiking trails.

There's much to recommend at this hillside property, including the large picture windows and balconies overlooking Lake Arenal and the attentive service from the owners. Standard rooms have white tile floors and paintings by local artists. Higher up the hill, spacious bungalows with kitchens afford an even better view and are farther away from the road. With over 30 varieties of palm trees, this is a great place for bird-watching, and an on-site nature guide helps you delve into what you'll see here. A huge breakfast with homemade tortillas and breads is included.

This rain-forest B&B has old-fashioned charm with three chalet-style bedrooms looking out onto the mystic lake and volcano. The owners (and their resident Great Danes) have converted their hillside home into this lovely lodging that attracts seasoned travelers and nature enthusiasts. The cozy rooms have sloping ceilings, hand-carved furnishings, and tropical hardwoods. The two rosewood rooms downstairs have tile floors. Up a spiral staircase lies the L-shape, all-wood double loft with three beds and a back porch that overlooks the large garden. Running through the manicured grounds is a river and a network of hiking trails for exploring; rubber boots are provided. Birds abound: 100 species have been cataloged on the grounds. A favorite pastime is sitting in a rocking chair and watching the hummingbirds feed. The breakfasts are divine, with fresh-squeezed juice and macadamia-nut pancakes. The entire property is no-smoking.

This funky little mountain ecolodge has fabulous views of the neighboring Tenorio and Miravalles volcanoes and is a great base for viewing nearby Rio Celeste. The open-air lobby is overflowing with plants and looks more like a greenhouse, the extensive gardens and 2 km (1¼ mile) private hike are perfect for wildlife viewing, and the rooms themselves are minimalist but bright, clean, and comfortable. Breakfast comes with the room but we recommend the pre-fixe dinner as well—inventive cuisine for just $25 a person. 

Set in the rainforest, these marvelous, secluded casitas have elegant furnishings, sizable bathrooms with private garden showers, and terraces that entice you to spend time in nature. There are hot tubs and a massive pool, a gracious dining area and bar, and beautiful grounds with lots of ponds where you may discover exotic rainforest frogs (and possibly the snakes who feed on them).

Situated on 3 acres with private nature trails, these completely updated casita duplexes with large windows, separate bedrooms, porches, and luxe linens are lovely, but it's the top-notch service that sets Senda apart. The parklike setting is made even better by views of the Gulf of Nicoya at the top of the property. Check out their complimentary cooking and yoga classes. The property is wheelchair accessible.

Whether whiling away the mornings on the porch amid the toucans, trekking to the river, or spotting nocturnal creatures on night hikes, nature lovers will be enthralled with the stilted cabins of this 10-acre property in the trees. With nice beds and air-conditioning, the basic cabanas, elevated on stilts, are level with the forest canopy, where you get a bird's eye view of the, well, birds, and Costa Rica's other plentiful flora and fauna. The property is quite a drive from the sights, but they're a relative bargain and friendly staff are a nice bonus. There's a minimum two-night stay.