Sue wrote to ask: Our first child is due in less than a month, and we have decided to stay in our 350-square-foot railroad for the first few years. Unfortunately it's becoming clear that we need to turn our bedroom into a nursery and camp out on the sofa bed in the living room. We don't want to replace our sofa, but we would like to make the decent queen-size mattress a bit more comfortable for everyday use. Can anyone recommend a good mattress pad or replacement-mattress company? I think we own the same couch! And if it is anything like our couch, the metal bed frame can be felt pretty quickly through most foldout couch mattresses. One expensive and two quick and easy solutions we have slept on, below. (Note: Include a pic of your problem and your question gets posted first. Email questions and pics with QUESTIONS in subject line to: nursery(at)apartmenttherapy(dot)com) • We slept on a pull out couch using the Sleep Number mattress and it felt like a regular bed. Allegedly, it has air pockets that protect you from being poked by the metal bed frame. But, it is expensive. •The cheaper option is to keep the mattress you have now, and add to it. A foam mattress underneath the regular sofabed mattress really absorbed the metal frame of our sofa bed, making our sleep a lot more comfortable! And the bonus is, it folds up pretty easily, either with the bed, or rolled up and stuffed in a closet. We used a 2" mattress from The Foam Company, but you may get a better deal if you go down to a local futon store - a lot of them sell foam mattresses, cheap! • The Memory Foam Mattress Top. The drawback is that this isn't going to fold up into your sofa, so storing these can be annoying. However, the good night's sleep you get on it may make up for that annoyance! Overstock.com always has these on sale. This one is regularly $329, currently $129.99. AT readers, what do you think? How can Sue get a good night's sleep on her sofabed? Who has a great mattress store recommendation for her?