If you decide on a Santiago Ixcuintla [1] overnight, stay at the Hotel Casino Plaza (Arteaga and Ocampo, tel./fax 323/235-0850, 323/235-0851, or 323/235-0852). The approximately 35 basic but clean rooms around an inner parking patio go for about $27 d, with private hot water shower baths, and air-conditioning.
For food, go to the Hotel Casino’s good air-conditioned downstairs restaurant/bar or check out the hearty country food offerings of the many fondas (food stalls) in the town-center market.
Links:
[1] http://www.moon.com/destinations/puerto-vallarta/the-nayarit-coast/san-blas-and-vicinity/santiago-ixcuintla