Something about the thermostat showing 120F tends to discourage vacationers.

Looks very similar to the August options and would pair nicely with a Nest thermostat.

@Derek Hobart use a 1) channel manager for guest messaging (Your Porter, IGMS, Smartbnb, OwnerRez to name a few), 2) dynamic pricing tool (Pricelabs or Beyond Pricing), 3) digital guest guide where you can embed short instructional videos (Hostfully), 4) WiFi lock (Schlage Smart Connect w/Smart Things Hun or Schlage Encode no hub needed), camera (Ring Cam) and thermostat (Honeywell).

They fixed the problem by turning up the thermostat on the hot water heater; and by waiting until after they showered before doing their daily laundry.They commented that they like the washing machine, and that it gets their work clothes clean. 

I have a wifi water heater and wifi thermostats so I can cut back on utility costs when no one is here.

I use Honeywell 9000 wifi thermostats that send me alerts for humidity or temperature levels I configure.None of these items have monitoring or monthly fees.

I've heard of thermostats that you can restrict to a predetermined range.

You can travel over with a couple thermometers and hang out for 15 minutes to verify if there's a disparity between the thermostat and the room temperature.

The tenant has a thermostat, run it up a couple points.You obviously don't have real world experience, so please!!!!

One trick, and a good idea anyway if it's not already set up this way, is to have a thermostatic mixing valve on the output of the heater and have the heater set to it's max temp.