The square dining table. Not as popular as the rectangular or round dining table, the square dining table has its pros and cons. If your space is small and you plan dinners for only four to six people, it is a lovely intimate design. This stunning rosewood table is 54 inches square, which is a perfect size for six people. If you need to seat only four people, a table 36 to 44 inches square will suffice. Everyone's personal taste differs on how the back height of a chair should look in relation to table height. More contemporary tables like this one cope well with a shorter back, while a classic design may require a taller back. For lumbar support, a back height between 12 and 16 inches is ideal. If the chair has armrests, it needs to support the forearms without shoulders being raised. The height of the rests should be 7 to 9 inches above the seat.Tell us: What are your tips for comfy dining room design?