That like saying I went to a singles retreat and met 1% and no one wanted to marry me.  

I am looking to enjoy my next investment personally as a mini retreat. 

I love your goal of one day having a retreat for missionaries, I have similar goals myself.  

Watch how fast they retreat.

Think of it like being a retreat away from the kids.

@Bret Allen We provide the house pest-free and will re-treat if reported in the first 30 days.Our lease has had the term "any additional or periodic pest control is the responsibility of the tenant" for at least the 11 years I've been here, and it has been vetted by our attorney.I understand your opinion may differ, but I would rather have a tenant raise the issue of being responsible for their own cockroach problem (we do SFH, so neighbors don't play in) than being named in a suit for damages because somebody had a fatal reaction to our pest control vendor's choice of chemicals. 

I've done many, many deals in San Diego and still own well-performing assets there as well as a large private retreat/ranch in North County.

The apartment and the garden outside the door are delightful retreats.

I am hoping to find a nice location in a US territory in the caribbean and market it as a couples retreat type of deal.

From the  pictures it appears certain areas of remediation can be done, ie remove the weeds and retreat the area.