That you truly treat them like a partner, and not just "another" LP. 

The LP said he now thinks no other LP got the email either because no LP besides him showed up.

I think we will see more "adult" families living together...kids move back in or parents move in with kids.The traditional apartment model was based on 12month leases, but jobs are not always 12 months and people want flexible terms, so co-living often offers that.Seems like younger people between 20-30 and some other age groups don't want to get married and start that housing pathway our parents and grandparents took.   

You could always get the extended warranty and still save money over the 3k model.

In my experience, using a hybrid model—combining traditional realtor showings with self-guided tours—has proven to be an effective strategy.

I'm interested in understanding how the LP structure works for foreign investors.

This is prime real estate, and is just about the last piece of land in this area.I have begun to develop a commercial property that I own with contractor garages, which is the extent of my experience in this space.I'm trying to get a sense of how to structure something like this, with using LP's, and also partnering with a builder, and carving something out in that regard.Does anyone have recommendations on who is currently working in this space and could provide some insight?

Business entities are US state law creations: LP is a limited partnership. 

What’s the best way for a new LP to vet potential managing partners?

Value add, so BRRRR type of model.