If you can't get the classic symmetrical shot right on, then I think it's not worth having. Any slight variation off axis will be easily noticeable as an error, intentional or not.
I agree that people would help a lot. I would try to get into the head of the architect a little, and shoot what you think he/she may have envisioned. For example, the 2 curved spaces frame an empty waiting area? People were probably part of the vision somewhere.
It's nice that the verticals stay vertical. What kind of lens did you use?