We got other quotes that were double the price.

My advice is to double check if to invest in Fort Meyers: talk with someone who knows the local market inside-out and is not pushed by selling you something because the market there has been very tricky. 

Our goal is to meet a targeted return of 15%-20% AAR within 5-years, doubling our capital within the investment period, to propel us into a bigger deal.

Built and sold.Hardy exterior, granite throughout, double arches, vaulted LR and vaulted main bedroom.

Pricing has doubled tripled or more over the last 6, 7 8 years,  ALL THE BEST 

What also stands out is the property is 3 bedrooms but only has 750 square feet, but I double checked the auditor's website and it says the same...so I guess they are probably very small bedrooms.  

This article talks about the area being saturated with STR'S and city council looking to double the lodging tax.https://pagevalleynews.com/lodging-owners-speak-out-against-proposed-doubling-of-lodging-tax/

Can landlord collect double rent or do they owe her a refund?

After paid off would bring in about 10-15K a month in rent and equity of 2 mil today's numbers (hopefully double in those 15 years).  4 rentals in texas 2 out of state.

The guest house is set up with a kitchen, bathroom, and then a large living room area that would double as a bedroom.