Sergio is a great host. He helped me with everything I wanted. He gave me good tips about local fruit stores, supermarkets, public transport and provided me with amenity I asked. Apartment is in a safe condominium in the center of Santa Teresa. Bus 014 to downtown stops right near the gates or you can walk 20 minutes to Gloria metro station.
Some tips from me: 1. Mundial supermarket accepts only local debit cards or cash; 2. Bradesco ATMs accept international cards with no fee, so you can get some cash and go to Mundial; 3. All international cards are considered as credit cards here, in case you want to pay with your card.