Because I live in a popular market I still don't see deep discounts on the horizon anytime soon so I am currently trying to figure out what my bare minimum requirements are for a long-term hold.

Leadpops seems be a popular pick.

IF that becomes reality, I could see them becoming more popular but I don't think they will become the standard. 

Close to a community college, a popular biking and running trail and outdoor activities, and I think a big hitter is that it's so close to major highway access I-70 as well.

Relators in the area can give you an idea of what areas are popular at least those that manage rentals.

@Mitchell Flaherty 24h is a popular urban myth in Milwaukee. 

As an example is this blog's popularity - selling fake dreams to many- although, it has a lot of good info, too.   

Hey everyone,  I was interested in doing student housing and I know individual room rental is becoming popular.

The building needs a lot of work, but the value add brought on by the across-the-street location of a popular university, combined with an attached vacant lot, will make this project worth the effort.

Utah is a popular landing spot for many west coast types fleeing high taxes, etc.