There are no hostels in São José do Barreiro but there are other types of accommodations...

"The Pousada Irmao Sol is located near of the National Park of Serra da Canastra which is the source of one of the most important Brazilian rivers, the São Francisco River.
The apartments are new and very comfortable, with accommodations for up to 4 people on each chalet which offers private restroom, gas heated shower, fan, refrigerator, TV & DVD, 2 hammocks in the veranda where you can take a rest and enjoy the sunset. Beside that you will have a fully equipped kitchen, laundry, external...