We have 3 furnished rentals all exclusively advertised on FF.

I think the "out of control high" rental and property prices you perceive in New York State are exclusively a NYC condition. 

This is straight from the Chicago Association of REALTORS website:A reminder that the Chicago Residential Lease, and all of CAR’s forms and contracts, are an exclusive member benefit for use only by Chicago Association of REALTORS® members or those who are party to a transaction facilitated by a Chicago Association of REALTORS® member.

The sec121 exclusion won't matter.  

I do mobile homes on land exclusively now. 

Here are a few creative ideas perhaps worth considering: Exclusive Wedding Venue:- Transform the property into an exclusive wedding venue, offering picturesque waterfront ceremonies and receptions.- Develop different wedding packages, including catering, decor, and coordination services.- Market the venue to engaged couples through wedding expos, social media, and partnerships with local bridal vendors.Corporate and Private Events:- Diversify income streams by hosting corporate retreats, private parties, and other events.- Market the property as a versatile event space for conferences, team-building activities, and family gatherings.Accommodation and Honeymoon Packages:- If the property is large enough, consider building or renovating accommodations on-site.- Offer honeymoon suites and guest rooms for the bridal party or guests attending the wedding.- Create all-inclusive wedding and honeymoon packages to attract couples seeking a seamless experience.Just a few interesting ideas to explore! 

Houston is a large city with many diverse neighborhoods to choose from, but here are some of the top neighborhoods for real estate:Memorial: This upscale neighborhood is known for its tree-lined streets, large homes, and excellent schools.River Oaks: This exclusive neighborhood is home to some of the most expensive real estate in Houston, and is known for its large lots, beautiful homes, and desirable location.The Heights: This trendy neighborhood is popular with young professionals and families, and offers a mix of historic and new homes, as well as a thriving dining and shopping scene.Bellaire: Located not too far from the Texas Medical Center, this neighborhood is known for its excellent schools and is popular with families.Midtown: This central neighborhood is popular with young professionals and offers a mix of high-rise apartments and historic homes, as well as a vibrant dining and entertainment scene.Montrose: This historic neighborhood is known for its eclectic mix of homes and is popular with artists, musicians, and young professionals.Many Houston Suburbs/OutskirtsThese neighborhoods are just a few examples of the many great areas for real estate in Houston.

I own a duplex in Wildwood and use Airbnb exclusively year round. 

@Dejan Rajkovic  I do mobile homes on land rehabs/new home exclusively now. 

Send a clear, concise, unemotional letter with the facts that reference the specific rule being violated and whether that is a stall assigned by management to your unit, or if it is a "limited common element" exclusively for the use of your unit.