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Beds
Bed size and bedroom size
What size bed works best for your bedroom? The guidelines to the question are illustrated below. You need at least 50 to 60 cm from either the left or right side and the foot of your bed to the wall. More space is ideal. Before deciding where to place a bed, you need to consider the position of windows and doors, and the space required to open and close drawers of furniture.
A single bed in a four-and-half-mat room
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Even a tiny four-and-half-mat room can become a castle of your own once you close the door. Make full use of the small space: Put the bed close to the wall and use a bed with drawers. Sliding doors are better than hinged doors in terms of efficient use of space.
Twin beds in an eight-mat room (two single beds)
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There is enough room left between the foot of the beds and the wall to place a large piece of furniture. Depending on the position of the door and the window and the direction of their opening and closing, you can place a semi double bed along with a single bed.
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This is a layout for couples who want a special private space. Since spare space is limited, you can put only a small piece of furniture, such as a small chest or a dresser. It will be okay to put a semi-double bed or a double bed, depending on where it’s placed.
A double bed or a semi double bed in a six-mat room.
Selecting the right mattress is the key to sound sleep.
For side sleepers

We recommend a soft mattress that conforms to your body, including your shoulder and waist, which tend to sink deep into the bed.
For face-up sleepers

We recommend a mattress of average firmness that gives proper support to the back of the head and waist, which tend to sink deep into the bed.
For face-down sleepers
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We recommend a firm mattress that reduces the stiffness in your waist and neck
Selecting a mattress by type of material and spring
Pressure-relieving mattress

Memory foam urethane mat distributes your body pressure.
Latex mattress

Latex is a material that is processed by foaming the sap of rubber trees. Firmness differs by location on the mattress, with each part supporting your body firmly.
Bonnel spring

This is the most commonly used spring. The bonnel spring mattress is the best choice for people who'll be using it for a short time.
Pocket coil spring

This type of mattress, in which each spring is separately attached without interconnection, supports and conforms to your body regardless of your sleeping posture. Preventing vibrations from spreading, this type assures a couple of a good night’s sleep.
Advanced spring

Z-shaped springs interconnected in a mattress distribute your body pressure.
Mattress maintenance
With just a little care, you’ll be able to keep your mattress comfortable for longer.
Flip over the mattress every three months.
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Each of us has our own sleeping style. This means that one’s weight tends to distribute in the same place. Rotating your mattress can change where your weight is distributed, thereby preventing the mattress from sagging. Besides rotating it, flip it from time to time, and you’ll be able to keep it much longer. (Some mattresses are made for use on only one side. These feel different on the other side.)
Change the bed pad frequently.
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Mattresses are harder to air in the sun than futons. If you use a bed pad that’s damp with perspiration, it will make your mattress damp. Air your mattress in the sun at least once every three months.
Never bend a mattress nor jump on it.
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Bending a mattress can damage the springs and prevent good sleep. It could even lead to injury. Keep children from jumping on your mattresses. Jumping can damage the springs or the spring base, because of the localized force.
Remove moisture and stains as soon as possible.
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Moisture is the worst thing for a mattress. If it gets damp, dry it completely. For a stubborn stain, wipe it off by patting it with a cloth dampened with a mild detergent, and then wipe it with a water-soaked cloth so that no detergent remains on the surface. After that, dry the cleaned spot completely.
Unsteady frame
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Sleepers tend to toss and turn. These movements can damage your bed frame. If you use the bed while the frame is unsteady, it won’t be able to hold the spring base properly, and you might end up damaging the frame. Check whether the frame is steady enough every half year, and re-tighten any loose bolts.
