I've been living here for almost two years now, and I've even thought about buying a place here, but I have very mixed feelings about this building.
This place is billed as luxury living and on the surface, it definitely lives up to that image. Units are large, modern, and attractive, but the quality of the fixtures, appliances, floors, and paint are not great. This is not top-of-the-line construction, it's top-of-the-line-looking construction. Things break down or get damaged pretty easily, and although management is good about getting them fixed quickly, usually you will be deemed at fault for the problem and (from what I've been told by former neighbors) charged for major repairs when you leave. Good luck trying to argue wear and tear for anything.
Speaking of management, this is one unfriendly group of people. Almost every correspondence I've ever received, even for the most uncontroversial or routine matters, is defensive, stern, and sometimes downright hostile. Explicit threats of expulsion or penalization abound. This is a ""pay your rent and shut up"" type of place, which is fine, but incongruous with the image of ""luxury living.""
Building amenities are basic - a lobby, a small gym, a central courtyard, and covered parking. The courtyard itself is actually quite nicely designed and landscaped, although some furniture and amenities are being taken away. There's no recycling, which is irresponsible for a building this size, and packages usually litter the lobby floor near the elevators (a problem that can be solved by putting in a simple table or shelves).
The location is both a plus and a negative. I love living in Mount Vernon and since I commute south using the trains, transportation is very convenient for me. The downside is that this area can be noisy, especially if you live on the lower floors facing the street. There is a lot of passing traffic, and except for a few months in the winter, people like to congregate outside late at night and hang out, get drunk, or blare loud music. I don't mind it - this is city living - but I also have a good white noise machine. If you want peace and quiet, get a courtyard-facing unit.
Neighbors are generally nice and drama-free, although everyone mostly keeps to themselves. There's a decent amount of turnover. Rent is very high for the area, and although this building has many nice things going for it, you do pay a premium to live in one of the only newer buildings in the neighborhood. Hopefully all the new construction going on around will bring better alternatives to the market soon.