What The Sims 3 expansion enables me to have apartaments?

I think its High End Loft Stuff, but the STUFF tells me it may only be items... So is it Nightlife or another one?What The Sims 3 expansion enables me to have apartaments?
Stuff is just stuff.

It's Nightlife. That also introduces a celebrity system, as well as vampires.

Edit: Nightlife/Late Night, she had the general idea. :pWhat The Sims 3 expansion enables me to have apartaments?
Apartments..... you can live in High-Rise suites and penthouses in Late Night not (Nightlife). Some other Sims live in the same area but you can't actually see them. You can visit other Sims if they're in a room in an apartment/high-rise.

As of now there is no "Apartments" expansion in the Sims 3. And no, anything ending with "stuff" is a stuff packs, which adds no actual features into the game, it only adds objects (column, doors, windows, objects, chairs, furniture, decorations, etc).What The Sims 3 expansion enables me to have apartaments?
It's Sims 3: Late Night. :) They're actually penthouses, so it's a slightly different system than in Sims 2, but it allows your sim to experience compacted urban life in the heart of Bridgeport, a metropolis that is similar to Downtown in the Sims 2.
i dont have TS3 but its not going to be a stuff pack. they are just items. and its late night, not nightlife. nightlife was TS2. (and if you are confused somehow with TS2, it would be Apartment life.)