As a former Columbus resident, and a "soon to be" Cleveland resident, I'm wondering which you preferred...I enjoyed living in Columbus, but moved to Boston for more "exciting" city living.
Anyhow, I'm headed back to the Buckeye state, this time to Cleveland. Funny U bring up the trapezoidal rooms; I worked at the HR Columbus back in the mid 80's, soon after it opened. Those "11" rooms (and the corresponding "33" rooms at the other end) are very cool. I stayed in one recently, and agree that they could sure use a better furniture design...but the view from the bathroom is pretty interesting. That hotel, although a big convention house, has a good share of suites and those 11/33 rooms. Additionally, the rooms right next to those are also unusual....triangular. The "standard" rooms are pretty blah though.