A lot to unpack but my overriding 'advice' for what it is worth is to make sure you seperate the values of the park and the tri plex and analyze independantly. 

Analyze each city's rental demand, property prices, and your personal goals to make the best choice.

This is particularly beneficial in popular tourist areas where demand for short-term lodging is high.Flexibility: Owners can choose when to rent their property, allowing them to use it personally during off-peak times.Support for Local Tourism: STRs provide a unique lodging option for tourists, helping to boost the local economy by attracting visitors who may prefer a home-like stay over traditional hotels.Diversification for Investors: STRs provide real estate investors with an additional income stream, especially if they own properties in tourist-heavy areas.Cons:Strict Regulations and Higher Fees: San Antonio recently updated its STR regulations.

Despite its popularity, very few actually understand the asset class and how to achieve optimal returns.

Fewer variables make the deals easier to analyze and more predictable. 

You can't data-analyze who or who isn't motivated.If you think that you get a higher chance of finding motivation targeting people in some sort of distress, then again, answer me thisWhy does it take you 3000-5000 mailers calls or texts to RANDOM people to get 1 deal and it takes the exact same numbers to people on some targeted list or people propstream gets you to get a deal?

Be sure to check out the free tools BP provides to help analyze deals you may have and also market insights.

But they are not very popular and usually for larger properties.

I was analyzing a four plex and realized there are beautiful apartment complexes being built nearby.

Sorry not an expert in the padsplit model but did you analyze what it would bring in as a whole home rental?