£0 remaining for a sofa bed

N is a single older man who has recently been given the keys to a flat after many years of sofa surfing, following a relationship breakdown. He relies on Universal Credit and disability benefits, having being forced to give up working, due to diagnosed mental health difficulties. N leads a simple life and doesn't want much for his new home. He has managed to source most items, but is struggling to find a decent bed which is important for a good night's sleep so he can maintain his mental health. Please can you help?