Not a shack, but rather a clutch of rustic thatched bungalows with fans, this great place overlooks the Ong Tim River, 6km from Can Tho. It's the kind of place where backpackers are inspired to linger longer, thanks to the camaraderie between English-speaking staff and guests. The engaging tours and the proximity to Cai Rang floating market are bonuses.
An attached restaurant isn't cheap but serves great food. It's also pretty convenient for the bus station, as it's southwest of the city.