Penne's place is fantastic!
The cottage is excellent, spacious and well appointed. That by itself would deserve top scores, but it is further enhanced by the great outdoor space.
Penne is delightful host (ask her about ice cream... there is an interesting story there, and an even better ice cream!). She is very kind and good company, while being very careful and respectful of the privacy of her guests.
The place is a couple of blocks from Avenida de la Playa, where most restaurants and such of La Jolla Shores are concentrated, and 3 short blocks from the beach.
La Jolla Shores is a beautiful and quiet(er) beach (compared with Pacific and Mission). It's a great jump off point for kayaking. The northern section has decent surf. The beach goes on for miles past the Scripps pier, backed by the high cliffs of Torrey Pines.
PS: there are a couple of beach folding beach chairs available, as well as beach towels. I mention it because we didn't immediately realize that.