Now in-flight on the a350 from BCN to SIN.

I am somewhat similar with OP that of 1.8m tall and a US 13 feet, plus a relatively heavy build. While I love the width of the chair when sitting up right, I don't find the sleeping position too comfortable, I need to sleep on the side and bend a bit to fit in the space, and I have better sleep on Cathay and Air China business class with their flat bed as my feet is not stuck in the hole.

Of course the others has much worse food but I generally expect nothing in-flight and sleep all the way, I guess the design was ok but they didn't have sufficient test on the range of people gotta fly them. A 1-2inch longer seat may do the trick but that's just my opinions .