A pair of loveseats is one of the most versatile ways to furnish a family room or living room. They can be configured in an "L" to the left or right, as well as a in a parallel arrangement, and unlike a sectional, they will generally work in a different room in the future.
Loveseat-sized sofas are always a better choice unless you live in a verrr y large home. Full-sized sofas tend to act like aircraft-carriers in a normal-sized room, and then insist on lining the walls, rather than pulling into a conversation grouping. Evil, very evil.
For a lot of seating in one room, adding a pair of chairs and a pair of ottomans will give seating for eight--without looking like a doctor's waiting room. Those ottomans should pull into the center of the layout to be a combo ottoman and coffee table, and I put them too close the the fireplace!
Please select chairs that don't resemble the ones on this layout--ugleee!

This is similar the the last layout, but is parallel with the wall, instead of with the fireplace. It is generally better to square with the firplace instead, but this gives a bit more open space for toys and play for a toddler.

This parlor layout shows a sofa, represented by the sofa icon and the little blocks next to it. It is a bit large for this tiny room, but with a pair of chairs it can still form a good conversation grouping. These chairs could be angled a little for a more relaxed look, but not so far that traffic would go through the grouping. The chairs need to have low backs to work best here.
This room would be great for conversation, reading and family time.
A table lamp at one end of the sofa, a floor lamp at the other end (both on remotes), and a floor plug to have a third between the chairs would finish the room.
A tall plant or sculpture, with an up-light, in the upper right corner would look great against the bronze-color silk dupioni draperies.
Idea: With a smaller sofa, this grouping would look great angled toward the lower left corner.

These layouts show a good use of two loveseats and a pair of chairs, or a pair of chairs and a loveseat.
Most importantly: These plans only work if the size of the item is carefully plotted BEFORE purchase.
It makes me sad when I get calls from potential clients--calling after making a purchase--because they need help now that their new furniture will not fit into the room for which it was purchased.
Doing the layout first saves money in two ways: first, on the quantity of items purchased (generally fewer total items), and, second, saves money by making a better selection the first time.
Remember, "furniture always looks bigger in a house than it looks in the giant furniture store or club store...".

Here is a possible floor plan for a family room--it should also have a pair of chairs--across from the long side of the sectional--for conversation without a stiff neck.