If you need a quick boost of Room score, light a fire in the fireplace. Any of the fireplaces make a huge difference in Room score when they're lit. They work especially well when placed outside and lit just before going to work. Since the outside area is counted as one room, the fireplace will raise your Room score for you on your way to work.
For more Tips & Tricks for playing The Sims, including Time Management, building Skills, and getting more money, click here.