"We picked the hostel because of its proximity to the airport. On that front it did not disappoint. But the area of the hostel is very far from any activities in Guarulhos let alone São Paulo. Although with uber that problem cube solved easily. But I would recommend the hostel rather for short layovers.
The rooms were small (again better for layover than lengthy stay) but clean. At night the ACs can be quite loud (the one in front of our room was but the others not) but we addressed that so hopefully that is no issue for you.
Somehow the Trip.com booking did not make its way to the hostel which I found out because I wanted to book an extra day. Trip.com coud not fix it but the communication with the hostel went really well and the organized it with me directly."