Rationalist households: What can London learn from its predecessors?

At our most recent meetup, the London LessWrongers began discussion of setting up one or more houses in the capital. This thread is intended for discussion and advice on planning ‘rationalist households’ and on making them thrive. You can also register your interest in being part of a London, UK rationalist house here.

Those who currently live in or have previously lived in rationalist households
, or who have relevant experience, are particularly encouraged to share their experiences, and any data on house setups is most welcome. It would be great if we could get case studies of several rationalist households, to compare approaches and aid other organizers.

We’re considering having a room for visitors and people who are only in the city for part of the year, with an Airbnb-type arrangement for that room at other times. Therefore, we are seeking advice from Airbnb hosts on setting this up, as well as on its advantages and disadvantages.

We would also like to hear about the common pitfalls of group living in order to avoid making basic errors.