Stayed at Donna's airbnb for comic con and very much enjoyed the stay. I had my wife, son, and friend staying with me and it was very comfortable with the 4 of us (my son is very young so didn't use a bed). The location to gaslamp is very walkable and the area is fairly quiet and safe. The place was extremely clean and well kept.
It is clear that Donna uses this place herself as it is extremely well stocked with any and all amenities you don't normally get in a rental. While we didn't use most of them, it was very nice not to have to go out for small things like soap, shampoo, cooking oil, or water (she had water filters). The AC works great in the heat and each room has its own fan so you're always comfortable.
I would highly recommend staying here, and if I can get Donna's place next year for comic con again, I will. My only nit picking gripe is that you need a key fob contained in a lockbox to get into the garage to enter the building. Because my family and I sometimes traveled separate from my friend, the fob had to be returned to the lockbox each time since there was only one for everyone. A very minor in convenience compared to all the conveniences that were contained within Donna's place. Again, this is not enough to deter me from staying with Donna again.