For regular meditation practice, find a place that you can come back to consistently. The process of meditation builds up an energy, so if you can stay on the same spot you will be sitting in a meditative field. There are many little tricks to raise the energy of the room. Using a beeswax candle Will aid in doing this, plus will provide a soothing light if the room is dark. Incense and aromatherapy will change the energy of a room depending on the scent used.
Sandalwood is one of the classic meditation scents.
There are many aromatherapy products available specifically for this purpose. Check at your local health food store. Smudging with a sage stick will diffuse negativities. Opening the drapes and letting some light in will help. Try to use something soothing, such as flute, sitar, violin or much of the New Age music.