Franz was very helpful and communicative prior and throughout our stay. His home is clean, equipped with a super comfy couch and a brand new fridge, and located in an ideal neighborhood that is about a 10 minute walk to nearby restaurants and a 25+ minute walk to the beach boardwalk.
He also let us use some old bikes which are good for riding around the neighborhood.
Walls are a bit thin as you can hear everything next door, and the bed is quite small, but we had no trouble sleeping as it is a quiet residential neighborhood. At night be sure to mind the step down from the bedroom to the bathroom as we tripped up on it a few times unaware it was there half-asleep in the middle of the night.
I recommend his home as a base to explore Pacific Beach, Mission Bay and Mission Beach. It's definitely useful to have a car to explore other areas. We would definitely come back again!