Another point to consider is how many pieces you should get in a set. By following a few interior tips, it's easy to figure out how many pieces to get.
If you have a smaller space, combining multiple uses into one area is key. So smaller spaces do best with nesting tables, where you can slide one or two tables under a main table when not in use. So in this case, you'll want a set that has two larger nesting tables or three smaller nesting tables.
A major interior concept to keep in mind is balance. It's common to find a coffee table with two matching end tables. This is because you create a pleasing balance in the space when each side of a sofa has the same end table, which matches the coffee table. That's why the majority of coffee table sets have three-piece designs. If you're going for a traditional sitting area, choose a style that gives visual balance, like the matching coffee table with two end tables.
You can still find sets with just two pieces. These sets are a good way to keep down the overall cost. It's common to see the larger of the tables placed next to the smaller of the tables in front of the sofa. You can create some unconventional geometry this way and keep the space looking more open due to the gap between tables.
You could also place the smaller table off to the side. It's common to find this placement in more artsy and geometric styles because this look goes for more artsy and fun placements, rather than the traditional idea of visual balance.