If the problem persists, you could look into soundproofing options for the ceiling, like acoustic panels or even just thick rugs or blankets hung strategically.

If your pulling every mechanical component out, most interior wall and ceiling cladding, then the ROI on the energy upgrade may spec out nicely over a period of yearly savings (many years).

The only difference between STR insurance and LTR insurance is STR insurance will have a higher ceiling, which is normal considering their higher premium, and they will cover irregular items like flea damage, furniture damage or bike accidents which never fully cover the cost of insurance increase if you ever claim them. 

For instance, a large master suite with vaulted ceilings and its own bathroom.

New modern lights and ceiling fans, quality furniture, Big screen TVs (not so expensive anymore), big washer and dryer, one of those cool refrigerators.If you ever go stay in a nice hotel or nice airbnbs, try to pick up on some of the things they do to make it feel luxurious. 

It takes into account what size and type of windows you have, where the windows are located, insulation in the walls and ceiling, the type of construction etc.

Walls Remove/treatmildew (per surface) $15.00 Repairholeinwall $55.00 Repaint(perwall/ceiling) $30.00 Doors Replacedoor(inside) $165.00 Replacedoor(outside) $485.00 Electrical Replacelightbulb $3.00 Replacelightfixtureglobe $20.00 Replacelightfixture $65.00 Replaceelectricaloutlet/switch $15.00 Replaceelectricalcoverplate $2.00 Plumbing Replacekitchenfaucet $150.00 Replacebathroomfaucet $105.00 Replacefaucethandle $20.00 Replacefaucetaerator $10.50 Replaceshowerhead $27.00 Replacetoilet $175.00 Replace toilet seat $25.00 Locks Replacekey(doorormailbox) $10.00 Replacecylindricaldoorlock $35.00 Replacedeadboltlock $25.00 WindowsandWindowCoverings Replacewindowpane(sgl) $75.00 Replacewindowpane(dbl) $125.00 Replaceminiblind $20.00 Rescreenwindowscreen $25.00 Replace window screen and frame $50.00 Miscellaneous Replacerefrigeratorshelf $25.00 Replacestove/ovenknob $20.00 Replaceplasticcountertop $275.00 Replacemirror $45.00 Replacemedicinecabinet $75.00 Replacetowelbar $25.00 Replaceshowercurtainrod $25.00 Replace shower curtain & rings $13.00 Replaceshower/tubenclosure $350.00 Replacethermostat $80.00 Replacefireextinguisher $30.00 Removejunkanddebris (per area) $35.00 Replacesmokedetector $15.00 Replacecombodetector/alarm $40.00 Replace alarm battery(perbattery) $2.00 Replace drop ceiling tile $10.00 Replace wireless doorbell $35.00 Actual charges may vary based on condition and/or vendor bill.

There was some minor damage to the ceiling and the AC vents.

This property will not be fancy, and will be painted the same color throughout (walls, ceilings, trim, etc.).What "white" paint would you recommend for a Section 8 property that should give me the best results?

I raised the lowered ceiling, leveled the sloping floor, added under the floor heating, a soaking tub and separate shower as well as high quality quartz tiling and glass shower with brass fixtures and double sink.