Please consider getting two twin beds. I get such a variety of guests, often they are friends, mother and son, grandfather and granddaughter and other combinations. A double, queen, or king is much less appealing to my mind than separate beds. I have had many married couples and unmarried lovers book as well. Twice I have been told by married couples that they prefer separate bed because one or the other hogs the covers or is too restless. I also recommend adjustable beds if you can afford them. Guests always love this amenity.