The problem ended up being so severe the pest company had to tent the house and raise its temperature to something like 110 degrees for a few days.

For dining chairs, web restaurant store has some really nice fully welded metal chairs that are a single piece aside from the seat and back panels.

@Jeremy Bloom  the rag on the thermostat can be beat by placing a remote thermostat that is set to the legally required temperature with that remote thermostat actually controlling the temperature.

You can probably find an online link about how extreme temperature changes are not the ideal way to heat a home and cost more in the long run.I don't know what the local rental rules are where you are, but look them up and see if you can give her notice. 

A minimum temperature of 55 oF must be maintained inside your Rental Unit at all times; damage to the Premises resulting from you not doing so is your sole responsibility.19.

Yes, this seems to be happening a lot now as a way to advertise without advertising, so I wanted to check the temperature to see if it's me or everyone is bothered by it.

Where I am the current temperature is about 10 F right now.

We can remotely control the temperature, but if someone (a guest) manually changes the thermostat, it overrides our remote settings, which is what we want.   

just don't do a lease. as others have mentioned, this forces the buyer of the property to take over the lease (if its even allowed/ they qualify) and it certainly does make the property a little tougher to sell. i'm also doing a house hack, and here in CA, its made a world of difference for me. the bulk of our energy usage is in the summer when we want to run the a/c. my bill stays a constant $228/mo (i pocketed the tax credit and simply financed the panels after that grace period). instead of getting an $800 bill in the summer months, we run the a/c at a constant temperature 24/7 on auto, stay comfortable, and i typically get a little bit coming back at the end of the year. don't expect to pocket this "little bit back" by being conservative with your useage, it sort of is a use-it-or-lose-it situation... i think i got $54 back this year.

San Diego official temperature seldom is above 90 degrees.