Prior to the renovations, we always asked for the bottom floor simply because of its ease of access. We stayed on the bottom floor post-renovation, and only experienced a few noise issues. The biggest one was a kiddo who was taking a mid-day break, having some fun rolling some type of toy across the floor. Not a huge deal, but it nixed our napping plans a couple of days.
On our trip last week, I requested bottom floor again, but we ended up on the 4th floor. While I wasn't necessarily a fan of the elevators/stairs after a long day, I loved not having anyone above us. I think we are newly-minted top floor people.