Facilities in the Elfin Forest?
The Elfin Forest is a nature preserve with a minimum of development. There are defined sand trails and a very nice, extensive boardwalk. There are trail guides available along the boardwalk at two locations. Also there are interpretive displays at various location plus two bay overlooks. Benches are placed at strategic locations for rest and contemplation.
That is about it for "facilities."
Neither restrooms nor drinking water are available in the Forest. The two closest public restrooms are:
If your tour is continuing on to Montaņa de Oro State Park, there are a number of restrooms available. The easiest to find are at two locations at Spooner's Cove (to your right, on the beach or to your left, across from the Park Headquarters), about 5-6 miles.
Of course, if it is time for lunch or other refreshments there are a number of eateries, etc. with restrooms that would welcome your patronage, scattered about Los Osos. The biggest concentration is on Los Osos Valley Road between South Bay Blvd. and Palisades Ave. The two other concentrations are 2nd St., between Santa Ysabel and El Moro; plus 9th to 11th on Santa Ynez.