Talk with them and be up front. There might be a VERY good reason you can't have one, and it could come back to bite you in the end. There could be weight restrictions (even on the first floor) where the building just can't take the small footprint with such a massive amount of weight. If anything happens (like a stand failure), you'll be on the hook for the damages. They may require renters insurance or prohibit anything above a specific gallon size. Being up front and honest protects yourself and shows you are worth having as a renter.