Have you ever heard of host GPO?

I am primarily hosting traveling medical personnel because there is a lot of demand for these professionals in our area and because my units are suited to their needs.

Would you please recommend any attorneys of firms that are familiar with international law for these purposes?

They were a law firm who hunts class action suits to go against companies. 

You also don't need to do a traditional long term strategy, is there a draw the  area that playing host to a traveling nurse or other professional/student would be interested? 

Like mentioned it's also beneficial to keep up to date with what's happening in the area your STR is located, and make sure the decision makers are aware of hosts and what they bring to the community.

I've been through situations like this.Hopefully the family pays rent and this becomes a non-issue.If they don't pay the rent, you need to be understanding and kind, but firm.  

Also, consider who you’re hosting, is it families, business travelers, or medical professionals?

You need a skillset that you can manage tenant's expectations and enforce the lease with a professional but firm manner.

I am definitely hosting at least 1 open house every weekend and that is actually how I found my first clients!