How big a table in the dining room?

[roisin]

I would like a 6' table, but I'm not sure our new dining room is big enough.

How big do you think is the minimum size of a room to fit a 6' dining table? Normally, the table would just have chairs down the sides. But we want to be able to have 8 chairs (ie on the ends as well), for when we have guests.

(If necessary, we won't have any other furniture in the room at all.)