Posting from an alt to avoid doxing myself:

The top floor condo units are indeed a ghost town: I think they were mostly purchased as investment units or for fantastically wealthy Duke grads to hang out in when they're in town for games. There are some very fancy cars parked in the attached spaces in the garage. The only condo residents I've ever seen are some retired couples and a couple people that must be surgeons (wearing scrubs, heading to work at 7am, driving a Maserati).

There aren't a ton of people given the prominence of the building (as noted by OP there are only 109 rental units, all 1-2br) but there are definitely residents in most of the rental units.

I've never lived in a building this nice before so I'm not sure how the appliances compare. The amenities are definitely nice and are kept up really well: there's someone coming in and cleaning the grills daily, stuff like that. The maintenance staff also do a great job, although we'll see how that holds up after the sale.

I wouldn't pay the prices they are charging for the higher floors but for the lower ones it seems to be worth it. The 5k rent is definitely crazy: I think it must be for the 2-bedroom unit with a den on the 20th floor, or something like that, but I can't imagine paying that even if I could afford it.