Is a twin bed in Japan a double?
Twin beds are usually just that, one person sized, 90 cm wide and 200 cm long. Semi-double are slightly wider, 120 cm. Double beds are 140 cm wide. Some beds are slightly longer - you might find them in better hotels.
Are beds different sizes in different countries?
The standard bed sizes in the UK and Ireland, other than the double, can vary compared to the US sizes and are generally smaller. The US queen corresponds to UK's king bed, and king to super king. The European or continental basic sizes are similar to the UK's version but have a set length of 200 centimeters.
What are the common beds in Japan?
The traditional Japanese bed is called a "futon," which is a thin, padded mattress that is laid directly on the floor. The word "futon" actually refers to the entire bedding set, including the mattress, pillow, and duvet, which are all stored away during the day to free up living space.