If so, how can you hide properties under LLC/S Corp from lenders (in order to be counted as less than 10 financed properties), given the fact that each property address and mortgage interest are displayed in tax return?

Finance costs(discount points) are usually shown up front, but do not have to be displayed until the rate is locked.Generally when you are quoted a rate, a fair and honest lender, although the rate is not locked, will disclose the cost to you for that rate, during that particular day.

They light fireworks off of the roof via a second story window, drive four wheelers on the property without permission, changed the locks, refused to sign a lease, refuse access to make repairs.

If you are looking to increase your direct bookings, I would seek to make a branded guest-facing website or a social media hosting page that displays your properties and builds rapport with consumers. 

The association I am looking into (link below) provides a credential and a badge you can display. 

Anyone have any recommendations for a company that hosts multiple properties with an attractive presentations and displays?

It has a new roof, new heating, new air, water softner, security cameras, networking, and ip phone system, on top of granite counter tops, and a ice cream bar with about 5 to 10k worth of custom cabinets wood shelves for medicine display.

Give the seller of a distressed property lots of cash down (displaying you mean business), interest only payments until you get your money back from the refi.

The use of open fires, fire pits, fireworks, charcoal burning grills, gasfired grills, or other devices shall comply all relevant federal, state,and/or local laws.I am curious, can I just list it on AirBnB and other sites not VRBO? 

Display your units6.