They have solid lease agreements designed to protect you, your income, and your property.Property Maintenance & Repairs: They have a network of vetted, licensed, insured contractors that can respond quickly and do the job right the first time.Minimizing Vacancy & Maximizing Occupancy: Their marketing reduces vacancy time.

Most of the ones I bought had existing tenants and almost all were paying below market rents and way below market rents.

I don't know if shifting to MTR could generate greater interest but it doesn't solve the marketability issue and all you are doing is punting the root issue down the road. 

I would like honest advice about the current market for STR's in Kissimmee. 

This collaboration is ideal for a professional with deep market insights, strong negotiation skills, and a track record of successful transactions.

The only money we have going into the market is in our HSA.

Low down payment AND it cash flows also AND buyer has title.Maybe I am asking too much, but I don't think so.Perhaps you just market to homeowners.

If the offer price is too good to be true you may be dealing with an inexperienced wholesaler who doesn't know the market. 

Look at their marketing strategy.

I am proficient in investing and confident in earning 7-10% returns in the market over the next decade or two.