The phrase "dining space" refers to an area specifically designed for eating meals. It is a designated place in a home or restaurant where people gather to have their meals together. Full definition
Create a vibrant outdoor dining space with accessories that work equally well indoors as outdoors. (idealhome.co.uk)
Formal dining space for eight, both inside and out, is perfect for hosting family and friends. (luxuryretreats.com)
This might mean an outdoor dining space in one corner of your deck and a sitting area, complete with an outdoor sofa and coffee table in the other. (styleathome.com)