Can't beat the music room, Equinox-style gym, rooftop jacuzzi, steam room, massage chair, etc.

Beautiful spa-like amenities and an Equinox-level gym. Location does usually require Ubers to campus, but there are public transport options.

I think that this property and the newly-opened complex will complete for #1.

Folks have balked at the cost to live here, but I cannot stress enough how much value the rent delivers considering the comprehensive amenities and the apartments' luxurious appointments.
The breathtaking views from the rooftop pool and hot tub are themselves worth a visit. State of the art gym, valet parking, business center, his and hers spa, 24-7 security, music room, dog run, playground, daycare, bike room... you name it. The staff is kind and friendly, knows who you are, and always lends a hand.
The apartments themselves are fantastic. The studio I live in is surprisingly spacious. The apartments are beautiful, well-maintained, and fitted with modern (ebony & bronze) or classic (white & gold) finishes. High ceilings, walk in closets, hardwood floors, up-to-date appliances, and massive windows with lots of light.
The centrality of the location is a massive draw. Kimmel Center across the street, Gayborhood a 5 min walk away, short walks to Rittenhouse and Fashion District, surrounded by excellent restaurants. Whether you take your car or bicycle or public transit, the city is open to you.
I've only given low marks on "Social" because you don't move to the Atlantic to know your neighbors or throw parties. It has a very restrictive guest policy, and I very much prefer that. I wanted somewhere private where I could enjoy my own company, so I count it as a blessing that there aren't rowdy groups in the lounge or the pool area when I want to relax. Which, by the way, happens very frequently at the other large complexes in the Rittenhouse area due to the lax security and the number of students living there.
For the quality of life here, I wouldn't live anywhere else in Philadelphia.

Amazing amenities, condo-level finishes, super nice staff.

Pros: Beautiful building with really nice finishes and great amenities. True NYC-style doorman building.

Cons: A bit of a hike to campus. Broad St (14th) is loud so you want to be up high or on the other side of the building.

The building is phenomenal. The staff are incredibly nice and helpful. The amenities are incredible in every way. The building is brand new as of a couple years ago, so pretty much everything is new. Gym is basically an Equinox. Co-working space is really nice. Rooftop is amazing. Apartment finishes are above any other rental building I have seen.

Phenomenal place

The Atlantic is a beautiful building only a 10-15 min walk from Rittenhouse Square. It has been open for ~1yr. You are readily located to the subway/trolley system as well as Midtown village which has great restaurants and bars. In general the building’s residents aren’t students but rather working professionals.