There are several features that will increase salability, but not necessarily value, but I wouldn't overlook them for the sale.  

This part of the island is probably the most diverse region (based on property types and features) and the largest geographically. 

(Link to the story: Is a landlord liable for accidental deaths on their rental property when they do not install safety features around a swimming pool?)

TenantCloud may be free, depending on what features you need, so you might want to give it a try if you are just starting.

Granted, the beach is walkable (probably the most important walkable feature)., but it doesn't seem easy to get anywhere else in town by foot.  

In addition to regular security features like motion sensor flood lights, security door & window coverings and cameras, did you know you can hire security dogs to come live at the property while it is vacant?  

Hey my name is Dominic, I'm 17 years old from Utah, turning 18 in a couple months, and I've put in a lot of hours into trying to educate myself in the ways of real estate.

No offense to the men but it does seem to be pretty male dominated :) If anyone has any advice to offer please do let me know!

I use the advanced feature to break down rehab costs by category, but all the costs show up as "misc" when exporting to PDF. 

The tenants will wear down all its fancy luxury features, and paying higher than anything around for speculation on appreciation reasons is just gambling.