This was my second time staying here and still love it. I had extra noisy upstairs neighbors a couple times but I messaged the host and she was super friendly and quick in resolving it. This is a downstairs so some noise is expected; it's usually quiet during the quiet hours plus I always bring earplugs so noise generally isnt a problem.
It's an older apartment but has everything you could need (full kitchen, nice sized bathroom with towels & a hair dryer) plus the location can't be beat. Super close to the beach and to bus stops. It's just a short ride on one bus to Old Town and the trolley station there so super easy to get all over San Diego without a car.
This is my go-to place when I'm in San Diego for work but it'd be awesome for a vacation trip too.