This is absolutely a possiblility
the arched window in the cliff matches the windows in the tower of the original cliff house.
the cliffs in the picture look just like the ones cliff house is on or seal rock near cliff house.
Unfortunately (don't know when the last time you were at cliff house) but Cliff house is closed and fenced off and undergoing major renovations (including new landscaping)
There was absolutely no way of getting in there.
Mark twain did write about cliff house- (he lived in san francisco for 2 years and was quite prolific. I made a list of the objects of Twains attention. using golden gate park as the center. and it was quite easy to find something Twain wrote about in every single direction. (except due south)
which makes sense because at the time there wasn't really anything south of Golden Gate Park.





