Summary: Welcome to apartment living. If you thought free time and seasons were different, now your sims can live in an apartment complete with noisy and nosey neighbors. I find the addition of 'apartments' to be both welcome and frustrating. Welcome in the sense that I would love the opportunity to see all of my sims living closer together. Frustrating because now your sims have neighbors who will complain if you have dirty dishes in your own house! Umm okay maxis.
Summary: Apartment Life is a mixed bag. Yes, their are apartments and you can build them. The apartments that come pre-made have on problem, you can't add much to them once they are built like additional windows or walls. On slower or older systems, you will experience a lag when you try to play on bigger lots. Their are new outfits and furniture as well as new hairstyles, new interactions and gestures.
Summary: Whatever you do, don't buy this expansion pack for new hairstyles. There's only a few, and they trick you into thinking there's more with silly recolors. The new pony tail hairstyle takes up four slots. The only difference between them is the color of the rubber band! I am not kidding. I for one, do not really care what color scrunchie my female sim wears. It amazes me that the company who created this game still can't make hairstyles half as well as the community.
Conclusion: Well, you cannot build apartments, there are some few novelties, but nothing really extraordinary... Another package with new clothes, furniture and new ready-built houses basically... For sims addicts like me this is great enough.