TLDR: If you are looking for a place to store your stuff and crash at night, then this place is fine. If you are looking for a place to relax, cook meals, drink a cup of coffee outside in the morning, then this is not a comfortable option. Courtney was very friendly and communicative.
Full review: The unit is as advertised. There is a full sized kitchen, though not a lot of sitting space to eat meals. The living space is small, but if you spend your time out and about then it doesn't matter. The best part is the bed which is big and comfy. The bathroom is also nice. The yard/deck was not as I expected, though not necessarily not as advertised. The deck connects to the host's residence and is not private, so we did not feel comfortable using it. The yard is not fenced, which would have been nice to know for my dog. Courtney was friendly and responsive. Overall, I have stayed in better AirBnBs in Santa Cruz for the same price (that did not allow pets), so I believe you are paying a premium to be able to bring your pet which is worth it.