If a $1M+ Boulder duplex STR strategy is out of the question, I'd recommend going out to Longmont (getting cooler and less stabbier every day).

I have a converted sunroom in my home, and while it looks nice, it’s poorly insulated, and is always 5-10deg cooler in the winter.

Another consideration, in case the previous posts were not convincing enough, is that high-end renters in an A property expect the property to be maintained as such.Granite repairs, travertine wear & repair, wine coolers, 3+ toilets, 3+ garage door openers, wet bars, indoor/outdoor custom lighting, landscaping and the list goes on. 

Then you need to evaluate the temperature drop across the evaporator and CFM air speed before adjusting the fan speed.Having said all that this is the problem with property management companies. 

I use a 125 cfm diesel compressor .

Subtle but makes the kitchen look better.I always tile my showers, when a lot of competition does Fiberglass surround.I do accent walls, I've done wine coolers, wine racks, etc... things they wouldn't expect but makes an impression.None of these actually "add" value in my opinion.

Some of our highest producing months have been March, because of the cooler temps.

I have redone the landscaping, trimmed trees and bushes, upgraded the swamp coolers to HVAC dual-pack units, upgraded single pane aluminum windows to dual pane, and removed carpet in place of laminate flooring. 

So like if your offering a free tv that cost like 500$ or if your offering 500$ off first months rent, some people will think the tv is a cooler deal.

@Mary Mitchell thanks for your input, I agree about letting cooler heads prevail.