Observe her employer...and take it from there.

I knew my target market was the University of Maryland Medical Center as I observed people in scrubs wandering their way to the block adjacent to the block where I bought.

There isn't any scientific study or stats that I know of.Merely pointing out the observation of my wife and I as we have been looking at properties over the last 4-5 years. 

I like @David Song observation.  

The absence of a thermostat is something you could/should have observed when viewing and signing the lease and when you discussed heat.

In my opinion and from what I've observed there is a strong demand for rentals the ones that go the quickest are the 2/3 bed one baths from 500-800 a month.

However, there have been numerous work orders for the property this year, and the crews would no doubt have observed this issue and should have reported it back for repair prior to my receiving the citation.

All of which does kind of bear out the observation to not listen to the weather channel or think that a little catastrophe will put a damper on things.  

Did any one observe or is it just my account ?

I haven't observed any discernible pattern, seasonal or otherwise, when it comes to a lull in competition for even slightly below market or undervalued properties.The further you go outside of the core, the less appreciation you will get.