The room is comfortable for 4 people. A group of 7 told me they slept great. It gets cramped. It gets stuffy. There is 1 bathroom to share. 4 is plenty but, if you insist, I won't say no. I will, however, charge extra for each night an additional guest stays. I want happy guests.
90% of my guests arrive from other countries. I want to avoid misunderstandings so now I insist that guests CONTACT me BEFORE requesting a reservation.