We have successfully hosted with a sofa-bed for several years now, but I'm feeling it's time for an upgrade. In my research I am finding a lot of modern sofa's that convert to a futon instead. Futon is not an option on Airbnb, that I can find. I am just wondering if people have had experience with the difference and if sofa's that convert to a futon are acceptable accommodations? Also, if you have a sofa-bed that you love, I would be interested to know the brand. Thanks!