It's serviceable, but it looks harder to access than a visible-tank toilet. At the 3m mark in the video, my hands are instinctively cramping just by looking at

It's serviceable, but it looks harder to access than a visible-tank toilet. At the 3m mark in the video, my hands are instinctively cramping just by looking at that tight space. The difference is like working on a car in the 70s versus a Japanese compact car from the late 90s.