If I could find a local bank that is easy to use with good mobile and electronic banking systems along with a physical local office, all the better.

Remember that our thoughts generally control our actions which intern create a result, the problem is most of the time we don’t accept the results and/or the consequences after the fact.

My apps are online and electronic to make it easy as are my leases.

Our goal is to airbnb this house full time since it's in a great market 5min away from the international airport in phoenix, but curious if I should operate it under a "lease contract" to be able to qualify the income toward the next place.

It's easy enough here to find numerous banks within walking distance for currency exchange, most of the folks speak German, English, some Turkish and other languages as well, there are no shortages of things to do/sites to see, dining of local cuisine as well as international restaurants (from American to Australian), and shopping from both major retailers as well as open/local market shopping. 

Another path, you can try to help as an  intern for investor and learn to do BRRR and flips and chart your own path that way too..

My BIL and his wife are quite well off, he a retired doctor, she a high level executive, a Senior VP with an international bank recently assigned to Singapore.

I am by no means an expert in international Tax, but selling homes in Texas couldn't be easier.

3) As an international OOS investor are there restrictions?

Whether or not an item of income is subject to US tax depends on the internal revenue code and the relevant tax treaty (taking into consideration any applicable savings clause in the latter).It sounds like this isn't a residence.