It would be worth paying a third party to go and check the work for you to confirm it's completed before sending the funds. 

Pros - My 17 accord went up 6k (private party) after buying it 2 years ago from a dealer and putting another 35k in miles on it.

Our goal is to create a dynamic that both parties can benefit from and be happy.

To the greedy ones, don't get any ideas, just an example that a bank still has a duty to customers not to put them in a situation of having to deal with an untrustworthy party.

Also the Adelson family of Las Vegas Sands fame have purchased a couple of big parcels with hopes to build a giant casino/convention resort perhaps anchored by the arena for the Mavericks for which they also just purchased majority ownership from Mark Cuban. 

And the best part is they help you through the entire process of learning how to run the program with many tips for hosting an STR.

Otherwise, if you're assuming third party management, then maintenance is either baked into their fee or charged hourly like a vendor. 

At some point you'll grow big enough to hire someone to run Revenue management for you whether that be a third party(BNBlbs) company or VA. 

Most serious and qualified tenants are searching on the major 3rd party platforms you mentioned + realtor.com, redfin, and a few others.Apartments.com & homes.com are owned by the same company and may offer some additional marketing options.Another strategy to consider here is social media - video marketing.

This assumes there are no third parties who took an interest between the original deed and the new deed (think mortgage lender).