La Capilla lies at the end of the street in a barrio that edges up a hill into a forest. Before you take off, make sure you know how to get back. That won't be a problem if you are finishing your visit at noon or 2 pm. There will be a taxi to take you on, if only because the next visitors will be alighting from the cab, the driver of which will be looking for a pick up. If you come at the end of the day it's a different situation because there won't be anymore cabs bringing fresh visitors up the hill. Nor will the people at the entrance gate call you a cab. We asked and they refused point blank. But we had figured on that. We had our map and had no problem walking back down to streets busy with cabs or public transportation. As it happened, we weren't very far into our walk when we successfully hailed a cab driven by a guy on his way home at the end of the day. As we went down the hill in the cab we passed several people who clearly were walking the same walk from the Capilla. They had their arms out.
If you are going at the end of the day and absolutely must have a cab out, take your cell and get a number to call at your hotel and all will go smoothly.
We enjoyed our visit, particularly to the house. We make no comments regarding the quality of the paintings at the Capilla.
One last thing, be careful of out of date guidebooks. Until recently there were two venues--the Capilla and the fundacion. Forget about the latter, its closed and empty.