We were planning to have our baby sleep in our room in the pack n play bassinet for the first few months. Do you use a sheet in the pack n play? If so, does it come with one? What about any other sort of mattress?
Like everyone said - yes you need some and no they don't come with any. I like the quilted ones a little better just because they're padded and it makes the pnp a little softer. We have 4 regular ones and 2 quilted ones. Between the spit-up and diaper explosions, you change it fairly often. Even without either of those, you change the sheets often enough to need at least 2 or 3 sets.
No, you don't need sheets. I've only had experience with the Graco ones, but they have padded cloth bottoms - and we never used a sheet with it for my nephew. We have the little hoot Graco and we're not using a sheet for the bassinet or regular portion (they have the same bottom).
Re: Pack n Play - do I need a sheet?
This is what we plan on too.