We stayed at one of Jo's places during the Chrismas weekend and it was wonderful. The place is in a great location, right in the middle of the gaslamp district. This means it is very easy to go out and enjoy all the nightlife that San Diego has to offer. However, the location can also be a detriment as it is right above a hookah louge and near several establishments that are open late, which did cause excessive noise during the night. However, we had ear plugs so this was not a huge concern.
The apartment itself was nice, with a kitchen that allowed us to cook christmas dinner, and a big living room to lounge in. It is in a more historic building, and has wooden flooring so we brought slippers to keep our feet warm.
As for Jo, they were nice and responsive during our stay. It was easy to communicate through messages and we had no issues. Jo recommended Circuit which gives free rides in Downtown San Diego. They have an app which was super convenient.