It's tiny by US standards, but they use different types of furniture, so it's comfortable. They tend to use a lot of wall hooks, tons of tiny drawers, smaller convertible beds, etc.

I was living there with my wife and her two family members and had no trouble at all. That place was about 700 square feet, but it felt like an 1100 square foot place would in the US with giant furniture and large open floor spaces. I had a ~150 square foot room set aside for my office and VR space, the in-laws had a bedroom with tatami mats, there was a large-ish living room/kitchen with a big TV and couch, and then a bedroom for me and the wife

Bigger than a homeless guy shopping cart.