If your house has a big and comfortable living room, you could say that you have a commodious space for entertaining. Commodious means roomy.
Yes, you see the word, commode — i.e. toilet — in commodious. Both words once had the meaning of convenience attached to them from their Latin roots. Indoor plumbing is in fact convenient when you compare it with the alternative as is having room to spare. But that meaning was left behind years ago.