Some models provide storage for toys and other baby items in zippered side pockets, fabric shelves, hook-on fabric storage pouches, and small clip-on parent-organizer bags. Of course those features aren't necessary, but if you want to use them, look for storage that is big enough to actually hold something. Storage compartments should attach, or be built into the outside of the play yard, so they're out of your baby's reach. One deluxe example is the S1 by Safety 1st Satellite Premier Playard - Pegasus (about $128), which comes with attached shelves and a small laundry hamper.
• You don't need a sheet. Most play yard mattresses, which are thin, can be cleaned, and the bassinet is safer without this extra piece of material, in which a baby could become entrapped. But if you do use one, make sure it is tight-fitting and specifically made for the mattress or bassinet insert on your model. Never use a sheet made for a crib mattress or twin or other size bed.
Very pleased. I have a big baby boy and I was unsure of the stability before i purchased this. He's now 14m old, 31 inches tall and 35 pounds. He does fine with it. We've had it for a few months now and we love it. Very sturdy. I read that the stickers were easily peeled off and could become a choking hazard, so I simply never applied them. Easy to assemble. It sits in a circle or square/rectangle with no extra pieces or panels. I also read mixed reviews on the suction cups for securing to non carpet floor. We have faux wood laminate and I never bothered putting them on. Still, no problems. I'm a big time reviewer before purchasing. I can tell ya...this is a great buy.