A "futon" is a type of furniture that can be used as both a sofa and a bed. It is designed to be easily convertible, where the seat cushions can fold out into a flat surface for sleeping or fold back up for seating. Full definition
Guests at Onsen Arima Gekkoen Korokan can choose a traditional Japanese room with futon bedding or a classically furnished room with Western beds. (j2ski.com)
It also has a double sized futon in the living room. (iguanareefinn.com)
The alcove just beyond offers a workstation for guests needing to work while on vacation and a full sized futon sofa comfortable for sleeping 1 adult or 2 smaller children. (trinidadretreats.com)