Cozy is popular among a lot of investors I have talked to.

Quote from @Carlos Ptriawan: I am shocked that a forum as big, popular, and profitable as bigger pockets does not have a more capable search function.Biggerpocket is searchable publicly.

Not a popular idea right now, but increasing immigration is the solution to that. 

This is one of my favourite pastimes.

C) property needs to have signs of city improvements and be close to a popular area or near the downtown area in that city or town. 

I am going to offer a slightly different viewpoint, and it might not be very popular.

(Wyoming and Nevada, are popular for this)This still doesn't solve your "privacy issue" though, that would generally be done by holding title in a real estate privacy trust.

Here is what I proposed:Setup fees : Administration Setup:One Time Fee: $400Guidebook: Using professional photos give the guests a professional tour of the house and how the home works (Wifi passwords // How to use grill // How to use propane fireplace // Hot tub instructions // Sauna instructions //Check in and check out instructions //where extras may be storedOTA (Online Travel Agency) setups: taking professional photos and actively updating your listing on popular platforms;PMS (Property Management System) Setup Smart Pricing Set upWebsite integrationOther (furniture arrangement / design / décor shopping and set up) $50 per hour· Placement fees · Marketing Cost: Variable depending on needs/wants for marketingFacebook AdsGoogle Ads Cleaners: Set up procedures/take pics of expectations· Management fee—30%Guest communicationCleaner communicationSetting Rental rateDealing with small maintenance issuesBooking CoordinationSmart Lock integrationKeeping supplies stocked (TP, paper towel, all cleaning products, coffee, filters, creamer, sugars, teas,)(Receipts would be submitted on a monthly basis for either reimbursement or book keeping purposes)Encouraging guests to leave good reviews by periodically checking in, providing a review template, and ensuring guests receive the amenities they are looking forContinued marketingMajor Maintenance fees—OwnerCleaning and laundry services fees: Cleaning fee to the guest depending on how cleaner wants to charge

Cart rental is very popular in the area.

See what is popular (rental wise) around you.