Beds and mattresses- help me choose?

cheap single bed



I have nine hundred U.S. dollars to be spent on an individual basis. I could buy a cheap silver iron welded to $ 150 and a really nice soft mattress for $ 600 or a base of trundle really nice for $ 600 and a mattress to be an average of $ 350 which is no where near as comfy – its bruciacchiatura for my daughters room and both seem nice that you think?