If you heed the Yelpers, Haus is either an office from home haven or a hell of cacophonous music and surly staff. It's one of several almost purely functional work-oriented coffee shops that have opened in the Mission, and like those of its brethren its space is not designed for frivolity. The blond wood tables are on either wall and mostly sit one because it's hard to fit two computers (the big table was taken up by a single person who spread out a bunch of books); the ceiling is high; the walls are white, and there's only one couch. The chairs are hard and one of the tables I was sitting at listed alarmingly. Of course it boasts free wi-fi and plenty of power strips that for once are easy to access. It also has a nicer outdoor space, although that's something of a game of Russian roulette for San Francisco.
As someone who finds it hard to concentrate with music playing, I had been worried about Haus' rep as an experimental rock jukebox, and I had tried to push Mission Pie as an alternative (Haus is also right across the street from Philz so I felt traiterous in the coffee wars). But Mission Pie has no wi-fi, which is a boon to the attention-deprived but a problem for those who work collaboratively. "The music isn't too loud, right?" my studymate practically yelled when I walked in. This caused me a degree of scrutiny from the nice guy behind the counter, who seemed genuinely surprised that anyone would be bothered by the music and genuinely solicitous of what kind of music I would prefer. This kind of attention tends to embarrass me and I kept reassuring him that no, the problem was me and my inability to focus, and I liked all kinds of music and don't worry about it. But yes, the music at Haus is loud, in part because of the fact that people don't talk much there, and that's something to be considered when choosing your coffee shop.
Something else to be considered is that its prices are a bit steep. It serves Ritual coffee, which is a regular combatant in the coffee wars that some swear by, but an iced coffee will set you back $2.50 and a mocha $4. I was pretty incensed at first that my herbal mint tea was also $2.50, but it came in a little pot that provided 2+ cups so that wasn't awful value for the money. There are various pastries from various Mission sources that cost the same as elsewhere. There is not, however, a full menu, which isn't a great business decision for a place that encourages you to settle in for the day to work. You can duck right out and into one of the country's fullest taqueria/empenadaria/pupuseria corridors, however, so that may have gone into the thinking.
Summary: a no-frills study space, worthwhile if you live nearby and moreso if it's sunny enough to sit outside.