Katie and David would genuinely be considered your model hosts in every aspect.
They were extremely considerate, giving of themselves, and respectful of people's living arrangement within the house.
They make you feel very welcome, and they even sang a personal birthday song as a duet for me just minutes after arriving at their house. They are wonderful conversationalists, and are seemingly willing to talk about a wide variety of topics and share little tidbits of their personal lives, which adds to that welcoming experience.
The house itself is very homey, and the bedroom is clean, cozy and comfy - especially the bed! It's located literally one block to a main San Diego freeway, which allows extremely convenient access to virtually any region of the city since the house is rather centrally located.
Overall, it was an extremely pleasant and enriching experience staying with Katie and David, and I was quite sad to have to say goodbye to them. I'd definitely return if given the chance in the future, and I'd highly recommend them as hosts in every possible way.