I'm staying there right now. (ChezJJ SF) The "captain" here is a very knowledgeable and charming young woman who is also a brilliant cook. The salad she usually makes for brunch is just amazing. (Don't tell my mom, but it's better than even her salads, and my mom puts most chefs to shame as it is.)
Culturally, Chez JJ is an autocracy, but a mellow one. Usually, everyone just does what's needed to be done, but there is someone who will give orders if needed, and you can even be fired in extreme cases.
It's a wonderful place to stay. It's a fabulous place to met programmers and to be inspired. I am so glad I choose chez jj than single room in SF.
Downsides? Many.
1. There's a lot happening and so many interesting people that your productively may at times waver.
2. You are sleeping in a bunk.
3. Awesome people.
4. The entire space is shared. Privacy?
I've stayed at one of the MV houses twice now. It's an awesome place. I can agree with turnersr about the productivity. It is hard to concentrate at times, but that's because there are so many interesting discussions going on that one want to participate in. :)
Also, the at least the MV-house I stayed in had did have private rooms, which is what I've gone for both times.
Culturally, Chez JJ is an autocracy, but a mellow one. Usually, everyone just does what's needed to be done, but there is someone who will give orders if needed, and you can even be fired in extreme cases.
I'm enjoying my time here immensely.