Find a spare room--empty bedroom, walk-in closet, furnace room or bathroom if need be, and turn it into your serenity room. Darken the walls. Furnish the place with very little--a stand for candles, a small stereo, floor pillows. Heavy shades will enhance the mood. Install a lock on the door. Better yet, make the room off limits to anyone under the age of thirty, or shorter than three feet. Make that four feet. And no pets, either. One suggestion, unless cost is a factor, is an actual contracted remodeling. Look in the Yellow Pages or Online under quiet rooms, in-home theater construction or meditation rooms and peruse all the offerings. There are elaborate window shades, a product called QuietRock that is, drywall fabricated specifically for sound deadening applications. There are indirect, or mood lighting resources, even lighting that enhances the amount and kind of light if you suffer from seasonal affective disorder, in addition to noise pollution. . The same affect in reducing outside noise may be achieved by hanging blankets on the walls, and that may be a novel solution for couples. The wall hangings can be an art project, or a garage sale/antique store/self-spoiling expedition.
Many people don't actually know which room to start with, and here it's best to start with the most favorite - the kitchen. It is best to get it done before the other rooms, because this room is important - gastronomically speaking, and needs to be up and running in a matter of days.
There is also nothing worse than the smell of spices from last nights dinner drifting through the house either, so be careful of using strong smelling cooking ingredients during the time your home is listed for sale. The smell of home baked bread, cookies or cake is always great but can also be looked at as trying to cover other smells so I personally do not think that is a great idea either. Also, the use of fragrant candles is not a good idea as again it can be and has been used to cover odours and may be seen as just that.
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