Frogs in the genus Craugastor belong to the family Craugastoridae. 
For a long time the Craugastoridae family was a small family with about 115 species.
Today, however, many species formerly classified within other families are now assigned to the Craugastoridae.
The family Craugastoridae now has more than 810 species, making it the largest family of frogs.
All species are found in southern North America to South America.
Their natural habitats are subtropical or tropical moist lowland forests, subtropical or tropical moist montane forests, plantations, and rural gardens.

We found different individuals during a evening walk near a stream near the Los Tarrales Lodge.
I think the photos show Craugastor loki but I am not sure.

Los Tarrales Natural Reserve, Patulul, Suchitepequez, Guatemala, 18 January 2020