Fun, comfortable, clean, and very convenient to the beach! The walk to the ocean is roughly 6 houses; you'll be spoiled. Carl has helpfully stocked the main bedroom closet with beach chairs, beach towels, and boogie boards. The ice maker in the fridge doesn't work, so buy a bag of ice if you want that.
If you decide to rent a car--and I suggest that you DO--make sure you understand the parking. It's free, and along the street, but there is a schedule for when you have to be moved for street sweeping (different on each side). We had little trouble with parking; sometimes had to walk a few blocks, and sometimes had to circle the block a few times, but all in all not a problem and you'll be glad you have a car because there's so much to see and do! If you come from a place where parking is always ample and free it will be an adjustment but don't let it deter you. Parking is A Thing everywhere you'll go, but a car is still so worth it.
Lots of restaurants, a grocery store (Ralph's), and a CVS are all walking distance. You can buy liquor the grocery store (what?!) but they don't offer free bags, so either bring your own or plan to buy them.
Carl is friendly and super responsive, and we were never unhappy with our home away from home. We loved our week in San Diego and would happily rent from him again.