I don't think it's unreasonable at all. I mean, perhaps the word "cool" is used too many times- I don't care if the furniture in my office is cool. But I have switched to a standing desk and love it- so an office with standing desks would definitely be an influencing factor when I choose where to work.
In contrast to this 'cool office' wave, when the company I work for was acquired, we moved to a new office and we used furniture that the company who had bought us had in storage.