Does this mattress make noise or squeak?

It can occasionally, because this mattress uses a connected continuous-coil core rather than independently pocketed springs, and linked coils that move as one unit may give the odd creak as you change position. Most owners find it barely noticeable in normal use, and the foam comfort layers and Euro-top muffle the surface. Very light sleepers or anyone sharing a room should simply know a connected innerspring can speak up now and then.