As big as you are, you should consider moving the properties into multiple LLCs (my personal rule is no more than $1M in single familys in one LLC, but this may need to be higher in your area). 

I think you see on BP the biggest heartache investors have with their GP is lack of communications.

A flip, single family rental or small multi family rental?

Purchase price: $255,000 Cash invested: $100,000 Single family residential home in A Class neighborhood.

A hands-off garage conversion ADU is over $100, even doing much of the work yourself, it will be much more expensive than your estimate.Single ADU additions in single family zoned areas are typically one of the worse re investments. 

Should they have communicated better?

Maybe concrete single-family 1-4 units depending on the price point and cash flow.Also there is no real MLS in Puerto Rico you need to find an agent for each area you want to look at.

To clarify my previous post: 80% LTV is available on single family homes, 75% LTV is available for 2-4 units. 

@Tom Dieringer After purchasing my first property in 2024, I acquired most of my short-term rental (STR) knowledge from The Short Term Shop, which included maintaining respectful communication with guests, keeping calendar availability up-to-date, and ensuring high-quality listings.When I initially began May of 2024, I opted to list my property exclusively on a single Online Travel Agency (OTA) - Vrbo.

For out-of-state investors, I suggest considering a C-class turnkey single-family home.