I had a great 4-night stay here as I was passing through SF; Matt is an excellent, welcoming host, even picking me up from the BART station at midnight when I arrived. He's also a great person to bounce ideas for things to do off, and has extensive knowledge of the city and each of its unique districts.
The room itself is well maintained with a great view of the suburbs below. The rest of the house is also very inviting and comfortable to stay in. The nearby Mission district offers a range of places to eat, drink, and shop, and buses and the BART are also a short (~10min) walk away.
I'd recommend Matt's to anybody visiting SF and would definitely stay there again!