Go Sun Devils! WP Carey I assume?
Just because you and I hail from similar parts I'll try to help...
--Ease of use. Air makes it stupidly easy to sign up. Other hosting sites were a little more rigorous in terms of getting set up.
--Easy calendar customization: I'm impressed at how easy it is to do minimum night stay, adjust prices, seasonality, etc
--Reservation ease: Air is good about showing reservations in multiple formats, from a calendar view to a list view. I also appreciate that they send a reminder when guests are checking in.
--Contact: Air's messaging system is good in that you can also reply straight from your email.
--Co-host feature is great, in that they pair people available to help be quasi-property managers with those looking to Air their space.
What I don't like:
--There are a little TOO many menu options. I still get "my listing" and "dashboard" confused in terms of what will bring me where. I would probably change out "your listing" to simply read "calendar" and then put the functionalities under that (like reservation requirements).
--Small point, but Air needs to change penalizing the hosts for turning down a guest if another person comes and Instant Books the property out from under them. I had to decline a guest who queried because someone else came and booked within that time, and got a small admonishment from Air about "keeping my calendar updated." Well um, okay.
--Air's pricing suggestions are too low and they know it, and all but new hosts know it. And, they give new hosts a bump in the search engine, so there's high turnover of new hosts with low-priced properties. It's their right to do this as a business, but it ain't great for the hosts who know what their home's true rental value is (which is at the very least a whole 1bd/1ba house for the price of a single hotel room), and want to play at the higher price point.
Good luck with your research!