Ask your customers if they have any physical ailments. They may be prone to back, neck, hip or leg pain, all of which can be positively impacted by the mattress they choose. Any chronic pain or illness cannot only highlight the types of mattresses that would be beneficial, but also rule out others which could increase discomfort.
Inquire if the mattress is intended for one person's comfort or two. Many styles of beds and mattresses, like Tempur-Pedic or Select Comfort, are suited for use by couples in that the foam absorbs movement or each side's softness is adjustable.
Ask the buyer to describe to you what position he, or if applicable, his mate, sleeps in. Whether the person sleeps on his back, side or stomach can impact the type of mattress that can be best suited for him.
Converse with the buyer about their mattress preferences. Some may prefer the conventional coil mattress while others may choose a more modern foam or specialty air mattresses. Stress that they try each style. Someone who thinks they prefer coils because that is what they used to may be pleasantly surprised at the comfort of air and foam.
Consider the size of the bed. Room dimensions can also be an issue. A king bed may not fit in every room and a twin bed could become lost in a room too large for it. If the bed has easy assembly or dis-assembly this could also be a good selling feature.