I was there in February and it was closed. Check to see if they finally finish the remodelation. It is in the center of San Cristobal
Although we tried to visit this sacred place, we only admired the exterior, as construction works are in progress and the church seems inaccessible at this moment (July 2019).
Incredible atmosphere, great restaurantes, beautiful site seeing and best of all, the way turists are treated is wonderful all around.
Sadly this building is still being restored after the earthquake in 2017. But it's a nice spot for photos.
Very impressive, and easy to get to. Well worth visiting, but again very busy so needs to be planned properly