If you live in a small apartment...
The most important thing to consider when thinking about sofas and other living room furniture for small areas is size. If you're moving furniture you already own into the apartment, you'll want to measure both your furniture and the new living space to be sure you have room for everything. If you're buying new furnishings, you may want to look into a small couch or loveseat that doesn't take up too much space, and add a recliner or two smaller accent chairs to the room. Additionally, if buying new furniture consider how long you plan to live in the apartment and adjust your budget accordingly. If you're planning to live in the apartment for just a couple years while you save for a larger house, you may not want to invest too much in the sofa right now if you plan to buy a new one that will work better for the size, layout, and design of your future living space. Whether you're buying new furniture or already own it, be sure to consider the layout of the room, particularly where outlets, cable hookups, and windows are located to help you determine how to furnish and decorate it.
If you live in a moderate townhome...
Townhomes are a great in-between for people who want more living space than an apartment provides but don't want to deal with the size or upkeep of a house. If it's a smaller townhome, you'll still want to measure your living area and examine the layout to be sure your existing furniture will fit. If you're in a larger living space, you have many more options and styles of sofas to choose from, be it a cozy two-person love seat, a simple couch with a coffee table, or a sectional with built-in recliners. You can use the couch as the focal point of the room, then add side tables and other furniture and wall decorations to create the customized living area you desire.
If you've just purchased a house, you may want to invest in a high quality sofa that will last for many years. Many single family detached homes are larger than apartments and townhomes and may include multiple living areas, so you have endless options for sofas here. If you want to utilize the space of a den or finished basement to create a movie room, consider purchasing an L-shaped couch with built-in recliners and cup holders. Put an old-fashioned popcorn maker in the room and furnish the walls with movie posters to give the room a real movie theater feel. If you like to entertain guests, consider a large sofa with lots of seating for your formal living room. Add accent chairs and a couple of high-quality end tables, then decorate the walls with the art of your choice and an accent clock, and you'll have a hard time keeping the guests away!