Flew Campo Grandhe to Manaus, via GRU.
Campo Grandhe airport is small and quiet. There aren't many seats landside but while I was there they didn't even get close to full. There is also a nice (imo) eating area basically on the roof with plenty of fresh air and space, plus a 'by the kg' place on the main floor that is decent value. Airside is basic but didn't spend long there.
Plane itself felt like it was getting on a bit, with seats a slightly grubby cloth. No IFE.
Otherwise hard to tell the difference to so many airlines. So usual lack of wdith (being 737), adequate leg room for up to 4 hours or so, aircrew neither good nor bad. Transited at GRU, which felt like a work in progress and pricy.