Nature lovers will be smitten with the 
Pousada Sítio dos Tucanos (tel. 48/3237-5084, www.pousadasitiodostucanos.com [1], R$108 d), which sits on a private nature reserve on the edge of the Parque Municipal da Lagoa do Peri and offers sweeping views of Praia da Armação. The country-style chalet accommodations are simple but cozy. Equally inviting are the living room decorated with folk art and the dining room where homemade breakfasts (dinner is available too) are served at wooden tables that gaze out at the lush hills. The friendly German owner organizes eco-outings of all sorts, from mountain hikes to whale-watching excursions.
A few steps away from a secluded stretch of Praia da Armação, Pousada Pénareia (Rua Hermes Guedes de Fonseca 207, Praia da Armação, tel. 48/3338-1616, www.pousadapenareia.com.br [2], R$120–150 d) offers modern and attractively appointed rooms with verandas, sea views, and lots of peace and tranquility (no children under 12 allowed). Guests are pleasantly pampered—the hotel offers everything from beach chairs and volleyballs to inflatable kayaks and bikes.
Links:
[1] http://www.pousadasitiodostucanos.com
[2] http://www.pousadapenareia.com.br