In short - to me, Sam's caboose is what Airbnb is ALL about. It's a fun alternative to the boring beige hotels, without sacrificing any convenience and comfort.
The location is amazing - I was working in Los Gatos and Saratoga, and was never more than 20 minutes away from where I had to be. The drive into town is super pretty, with a windy road with very little traffic.
The experience, is anything but ordinary. To start, you are in the middle of redwoods. The fresh forrest air, and the lust greenery all around is so relaxing. There is a covered parking space right next to the caboose. Also some deck space (that I didn't get to use due to rain).
The space itself is so full of character, yet stocked with everything you may need. It wasn't apparent from the photos or the writeup, but the main sleeping space and bed is actually the loft ABOVE the main quarters. This creates a super cozy and almost surreal feeling of being surrounded by windows and redwoods, and the magic Northern California light. Mattress is comfy.
Sam was also a great host. Quick to answer any questions when I needed him, but generally leaving me to myself, without hovering or being nosy, like some hosts can be ...
In summary - I can't recommend this place enough! And this comes from a fellow Superhost in Phoenix area, who has also done extensive traveling and lodging with Airbnb.