It's easy to put together and take a part. The stickers were hard to place but that's not a big deal to me. My son, now almost 10 months, hates being confined. The play pen was very sturdy but he wouldn't stay in there without crying. I ended up buying another one and using sections of the pen to block off areas of the house. It's not as sturdy when not put together in a closed shape, but it works for us.
If you expect to frequently move your play yard from room to room, check its dimensions before you buy. Many interior doorways are only 30 inches wide—no problem for the 28-inch width of most basic models. But many deluxe models are wider—the Graco mentioned above, for example, would be a tight squeeze at 28.8 inches wide. Just be aware that you might find yourself folding a deluxe model to move it around inside the house.