I'd work in a filthy basement in the middle of Kansas for a company/project that’s worth it.
Uhm, well, you might think so, but it does get really old. I worked at a place that was doing important work, and when I started I had a nice office on the 5th floor. It had a beautiful view. A couple of months later I, and the rest of the group, was moved to an underground office. Now, I don't mean basement. I mean the "company" had emptied out a huge underground oil bunker[1], built a false floor and interior walls…
A year later, they moved me to floor negative 3. A few weeks later, they announced my contract was ending.
So, being moved to the basement is a clear sign you are not getting respect. The next time I'm moved to the basement, I immediately start actively looking.