I did 9 ft on 2 adjoining sides and 5 ft on the 2 far sides for a walkway. The 5 ft is plenty for 2 people to walk past each other. The 9 ft is plenty for loungers and walking past them but it is tight for a table and chairs. In the hangout corner it’s 9x9 and the tables that fit were too small. I did find one or two but they were more custom-y and several thousands of dollars. so I built my own but it was still tight. Everybody can sit fine, but sliding the chairs out to get up is tricky.