I've stayed at this Airbnb a couple times now and it's a solid choice for the neighborhood. While there is no dedicated parking, I don't usually have trouble finding a spot within a block or two on the street and safety has never been an issue for me. Yumi was very accommodating to my request to check in a bit early and as usual the unit was clean, quiet, and is nicely updated.
My only complaints are that for a one-night stay the cleaning fee made the total pretty hefty - over $300 for one night, which is okay if demand is really high, but I probably could have gotten a hotel room for that price, and it would have helped if I had a place to store my bags during the day of check-out. I know Yumi's place doesn't offer late check out or any storage, so I should have kept that in mind when booking.
I've mentioned this before but it really would make a difference to have large/normal sized bath towels. I am not a large person and the bath towels in the unit are extraordinarily small, which makes for less than a really luxurious feeling trying to use them to towel off after showering.
Otherwise this is a solid choice for a single traveler or couple who needs the basics in a clean, safe, quiet and well-updated place that's close to Adams and central SD and very walkable. I will definitely stay here again, just will be mindful of the length of stay to avoid the hefty cleaning fee for one night only.