I wanted to use it as a winter home if I ever left Vegas. 

You could change your rates monthly like summer vs winter if you want. 

And the tenant during winter: "I can't sleep at night because every time I turn on the heater, rat urine smell comes out of the vents."

Most of the Snowbirds hail from British Columbia, Alberta and Saskatchewan and they flock (no pun intended) this area from October - May (to escape the harsh winter months in Canada). 

Then you can clean/remove the mold and the problem won't come back.The most common source of moisture is lack of ventilation in the bathrooms or condensation on windows in the winter.

But people make the mistake of pulling equity with an old furnace and then that comes up in the dead of winter.

People from all over the world come to Miami to stay for the winter..Canada, Europe, South America and probably plenty of other places.

.- We then check out the rates by month for each competitor by month since they can vary so much since some properties have spikes during the summer for beach/lake areas, or winter for ski areas, or October for leaf-peeping, etc.- We then sum up the 12 months and you quickly end-up with a range of what you can expect to make.After we make our spreadsheet, we then buy the AirDNA data to see how close it is. 

Busiest for me is actually winter!

NH only really cares about tenants with no heat during the winter.