I mainly needed a quiet place to work remote during the day, and for that it worked out great. The fast internet was exactly as advertised and I never had issues with video calls or my web development work. It was mostly quiet although there was some remodeling construction during two of the days. The house also isn't the most acoustically insulated but it was fine with headphones and earplugs. (As a bonus, the solar house is a pretty cool and unique and Walter is very generous with letting you use any food in the kitchen.)
The rest of the experience was just ok. I knew the place might not be the cleanest from various other reviews, but it differs enough from other Airbnb's that it's worth mentioning. Walter addressed some of my concerns about the dishwasher maybe not cleaning dishes properly, although afterwards there were still two other dishes I found as I was leaving that hadn't been cleaned enough. Generally, the counters aren't left very clean, towels and sheets had blood and dirt stains (otherwise clean), floors need a more frequent sweep, and the fridge probably needs a deep clean.
There are also a number of things that probably need to be fixed or replaced. The bedroom door often wasn't shutting/locking properly. The chair had exposed upholstery staples I scratched myself on a few times. The window can only be propped half open with a piece of wood.
Again, the stay was generally good for my purposes, but just wasn't the best value compared to various other places I've been staying in over the last few months.