High season in Brazil follows the school holidays calendar, December and January summer being the busiest months. New Year, Carnival movable between February and March, see Understand above and Holy week are the peak periods, and prices can skyrocket, especially in coastal cities like Rio and Salvador. Also, during those holidays, many hotels restrict bookings to a 3 or 4-day minimum and charge in advance.
Hotels are plentiful in just about all areas of Brazil and can range from luxury beach resorts to very modest and inexpensive choices. The Brazilian tourism regulation board imposes specific minimum attributes for each type of facility, but as the 1-5 star rating is no longer enforced, check in advance if your hotel provides the kind of services you expect.
Pousada means guesthouse the local equivalent of a French auberge or a British boarding house, and are usually simpler than hotels, and will offer fewer services room service, laundry etc.. Pousadas are even more widespread than hotels.
In wilderness areas like the Pantanal, travelers usually stay in fazendas, which are ranches with guest facilities. In small towns of Minas Gerais people are fond of hotéis-fazenda farm hotels where you can swim, ride, walk, play football, and camp as well as sleep in picturesque barracks.
Also there is great fun in going on a boat hotel which will take you to inaccessible places on the rivers and lakes for great fishing trips or for simply relaxing and watching and photographing the wildlife which is very abundant in the Pantanal. The boats are large, safe, and comfortable with air-conditioned rooms very necessary. Several small aluminum boats with outboard motor, carried by the boat hotel, driven by experienced fisher/guide will take 2 or 3 tourists to the best "points".
Motel is the local term for a "sex hotel". There's no social stigma per se in staying in one, but the room service and rates are geared to adults staying for a few hours with utmost discretion and privacy.
Youth hostels albergues da juventude are becoming increasingly common.