Salontafels
The proportion that works: a coffee table about two thirds the width of your sofa. For a 210 cm sofa that lands around 140 cm. Leave roughly 40 cm between sofa and table so you can reach your coffee and still walk past.
Most coffee tables stand 40 to 45 cm high, level with the sofa seat. Lower reads loungey, higher is more practical if you eat at it. Avoid putting hot plates straight onto solid wood or a lacquered top; heat marks are stubborn.
Combine with rugs and side tables from the same living room range.