We have a room that will double as a den/hang-out and a guest room. Our most frequent overnight guests will be older (70s), so we need comfortable sleeping options (pull out couch is not an option), but the primary use of the room will be as den to be used by young, active children. We've considered a pop-up trundle/daybed, but haven't found one we like (we have modern taste). Looking for creative ideas to achieve the dual goals of seating and comfortable sleeping.