Some other considerations:
Living in the hotel might make people work more because less effort needs to be expanded on taking care of food, having a social life, etc.
For some having a place to work around other like-minded people is important for productivity
People sometimes learn relevant EA things from each other during daily conversations
Living in the hotel might prevent value drift and increase the engagement with EA (this is probably the most important one)
We hope to quantify as much of this as possible in our 4th post