I would think that showing off a luxury car would make them feel like they're being taken advantage of and/or that person with fancy car is profiting off them and their situation causing them to be angry and not close... very interesting.

If you're providing a luxury or high end property, it should probably be expected that fire wood would be provided; especially considering the logistics of obtaining firewood that could potentially be laborious or troublesome and inconvenient. 

I'm curious to know what's the right thing to do in this situation...I've explained to the Bottom tenant he has the luxury of controlling the temperature of the house.

If you're talking about a high-end luxury property, your renters care about everything.

I have lots of ideas for luxury STR on lakes is Minnesota and Wisconsin to make them stand out, but struggle with the funds and finding people that want to partner with a first time investor.