I have about that size dining room with walkways on all sides. In my previous house, I had a 48" square dining table that I used when we moved in. I bought a 48" round table, it was amazing the difference it made. There are only 3 of us so I just keep 3 chairs around the table on a daily basis. You could do a drop leaf. I am not sure it you could find one in a style that would go with your house. I have 2 drop leafs that I use around the house and bring out when I need more tables for company but they are both Duncan Phyfe antiques. Another option would be a round with a leaf or two that expands for family. You'll be amazed how a round fits the space better. Something about cutting off those sharp corners make it easier to maneuver through the rooms.

It is an awkward space and the step down needs to be factored into the size of the table. What are the measurements? Don't included the walkway from the other room.

I am looking for a dining room table (10-12 people) that will not scratch easily. I am having the hardest time finding one. I have 4 kids under the age of 9, and I am frustrated with tables that don't last. Any trusted brands? HELP please!

I agree with jinx. Also search for "drop leaf dining table" -- with this you can put against the sofa like in jinx's examples and then expand when needed. Above one is target: https://www.target.com/p/driness-drop-leaf-dining-table-dark-tobacco-holly-38-martin/-/A-53014524 here's one on houzz https://www.houzz.com/products/driness-drop-leaf-console-to-dining-table-oak-with-black-prvw-vr~120674405?m_refid=PLA_HZ_120674405_17540098681&device=c&nw=x&gclid=EAIaIQobChMIhO-C7rzo_QIVpYJbCh1wSgXvEAQYBiABEgK2P_D_BwE