Sansevieria is commonly called Mother-in-Law's Tongue. It is a good air purifier that removes toxins such as formaldehyde, xylene and toulene all of which can occur in homes with laminate flooring, panelling, other manmade wood composite building materials, carpeting and upholsteried furniture. The release of these chemicals is known as off-gassing, something quite common in newer homes.
We have a lot of laminate flooring in our new home so I am being careful to include plants that act as air purifiers. I bought a Sansevieria for our bedroom. This plant, despite the benefits to indoor air quality, lives on neglect. It prefers low light conditions, temperatures about 50ºF and moist soil. Sansevieria is recommended for offices, bathrooms and other low light living areas. Our bedroom has a northwest facing window so there is light but it is not a bright light. I'm using a watering globe to ensure the plant doesn't dry out. Other than that it is a very tolerant, low maintenance houseplant.