I think it has some good demographics in its favor and shows potential for continued growth. 

The demographics there are seasonal workers, full-time park workers, and the supporting staff required to keep the town and park running.

@Jim Adrian has given you some ideas to use in assembling your acceptance and rejection criteria; identify those that seem like they fit the demographics of the population that lives near your rental, write down the ones you wish to use (you can even make modifications if you see something too lenient or too strict), and use that to guide the decision regarding applicants.

Rental rates, gross rent multipliers, cap rates, demographics, etc)?

Demographics?  

Think about it, would your target demographic likely buy smart thermostats and/or switches?

I love to use city-data.com to analyze the demographics of an area before considering property there, and also am a firm believer in Google Earth's street view as an out-of-state investor.

I say be cautious because when reselling a mobile home in a senior park you are eliminating much of your buying demographic.

The first consideration is the target market, demographics, and the target market’s desire and trends.

The next steps would be to look at the demographics and trajectory of the economies of the markets.