How big is a "semi-double" bed in Japan?
I'm looking at accommodation for an upcoming trip to Japan.
A room I'm looking at quotes a "semi-double bed", a size I've never heard of. I found this question asking about "twin beds", but the Wikipedia page on bed sizes it links to doesn't mention semi-doubles.
How big is a semi-double in Japan, and is it suitable for two people to sleep comfortably?
A Semi-double bed is around 120 to 140cm (47 to 55in), depending on the hotel.
As for it being suitable for two people, that depends on how close you are:
I shared a semi-double bed at Mystays Asakusa-Bashi with a friend. If it hadn't been my long time friend, I would have been very uncomfortable as you WILL end up touching/brushing the other person while sleeping, even if you don't move much.
Here's an image of such a bed in Asakusa-Bashi. The size here is 120cm.
If it's your significant other, you should be fine.