If you are wanting some use that allows the public in, you'll need parking, maybe lighting, fencing, restrooms, ADA compliance, storm water retention and who knows what else depending on what you want to do on the property as well as consent of neighbors.

There is a very distinct line between ADA and Fair Housing.

Never just say "pets" if you want to avoid certain breeds being ushered in under the ADA. 

The property is fully ADA compliant however, it's a bit dated.  

I do know that under the ada laws there is no specific breed requirement for a service dog.

Unless you could ad a golden parachute to that agreement If the employer terminates the employee , or the employee quits , the employer agrees to pay the employee $250,000 lump sum as compensation for not competing in a similar business for 1 year .

@Anthony Andrew Young No (and this is a national answer under the ADA) which is this...ESAs are NOT animals, they are not pets, so you can not charge additional rents or deposits. 

I know ADA animals are treated completely different.

I did see that one thing you can do is turn it into a commercial property/license but that seems cost prohibitive due to most likely having to install sprinkler systems and become ADA accessible.It seem unfortunate that Denver is missing out on all the tax revenue that could be generated by a strong STR market.Any ideas you folks have would be greatly appreciated,Sid

If they have not confirmed an hour prior to their appointment, I send this text to their phone (which was required as part of their contact information I required in the response to my ad):As I had requested in my email, you have not yet confirmed your apartment showing for this evening, scheduled for 7:00pm.