I chalked this up to the humidity of the area and a seldom visited vacation property that the thermostat is set to a warmer temperature.

Or should I market it as a 'cool saltwater plunge', keeping the temperature a few degrees below body temp?

For us, figuring out how to turn the water on and off and having a smart thermostat to monitor the temperature at our property remotely made a big difference to our mental health.5.

I do like knowing most exterior doors are secured, especially after a guest leaves (and during winters when temperatures can reach single digits or below and our cleaners can't get there until later in the day).We do have physical key backups in a lockbox on site for emergencies.

@Jordan Quinn if you have adjusted the temperature of the hot water that was step 1.

You may also set a rule that the HVAC is required to stay on at a set minimum temperature (which will actually help the system last longer as well). 

What are reasonable temperature limits for the thermostat in an MTR located in Texas?

Out here when I live it's going to cost at least $275/SF to build a spec that will keep up with the competition and meet buyers expectations (high ceilings, semi-custom cabinet package, fireplace, floor to ceiling tile in all showers, swimming pool, temperature controlled garage, pot filler, thermador appliances, level 5 drywall, oversized custom pivot door for entry, epoxy in garage, custom closet in master, etc)Also that number assumes you are owner-builder or you GC the job yourself.

Suitable temperature (generally 40 - 100 degrees Fahrenheit)The easiest solution: remove the water source.

Yes, you can train a farmboy to weld a crude Normandy-style landing boat in a couple weeks.