Which I'm using for a crib... my baby isn't old enough to roll over. I am in love with all the furniture for this house and I'm so glad making most of it is included in the book.
Things with wire are "fiddly" and they can get nerve wracking unless you have quick drying glue. Things sometimes move before they set and wire does that a lot for me. I used florist's wire and another wire just a little thinner to make the curvy pieces.
Invest in a good quick drying glue and save your sanity when working with wire. It will test your patience sometimes but it's worth working with it for the finished product.
I made the mattress with two layers of foamcore glued together and then covered it with plain cotton. I made a couple of little pillows to make the bed cozy. It wouldn't take much to just make the sides a little higher for a crib but I didn't think about that while I was working on it because I thought it was adorable just the way it was. Cute, cute, cute.