Snow removal is typically dependent on the amount of snow.  

Air conditioned air leaking to crawlspace making crawlspace heat or cold depending on season causing more power bill to tenants.

I also know Arizona is fairly investor 'friendly' and has fairly low property taxes.Interested in purchasing small multifamily properties (2-8 units) depending on the property and numbers of course.

The process is very involved as you'll have to navigate pre-construction activities that involve architectural plans and approval from the city and then the construction activities (Shovel to soil) take anywhere from 5-9 months depending on how much your building. 

Depending on if you qualify for the special allowance for active RE, you may be able to take up to $25k in losses (unless you are full time in real estate and may be able to use real estate professional status). 

It might be worth quite a bit, depending on how much cash flow it is generating.

It really depends on your market and the owner's needs if sub to is even possible.

Depending on property titling one partner can get the conventional financing and the other can make a gift or use their assets for the remainder.  

It defiantly depends on what area you're looking into.

I also find that depending on the tenant, my one Airbnb property has less wear and tear because it's constantly cleaned and maintained versus my other rentals where the families living there settle in and accumulate stuff - which makes it hard to deep clean regularly (to my liking) as well as just the constant daily wear and tear from kids etc.