Guest room mattresses are either new and rarely used bargain finds, or old and lumpy remnants from another bedroom's upgrade. A good mattress pad is an affordable way to add comfort and support. Take a page from the best inns and dress the bed with two firm and two soft pillows. Have a synthetic-filled pillow on standby for guests who may have allergies to feathers in down-filled varieties. Also, make both light and heavy blankets available so your overnighter can customize bedding to suit their tastes.
Shown: Simmons BeautyRest 5-Zone BackCare Mattress Pad
; about $55