[pls2halp]

>Compared with the standard lavatories, Smart-Lav brings 5.5 additional inches for more seats and 10 additional inches for recline space.

Yet they claim it "allows up to 6 additional seats in the cabin". Assuming they're in a row, I fail to see how you can fit a seat in 5.5 inches.

>The interior of Smart-Lav has been designed to enhance the spaciousness and the hygiene perception by the passengers.

It's blatantly focusing on perceptions over reality. I got sick in a plane with a similar layout(I think it was with Emirates) and I remember it being significantly more uncomfortable than any other plane I'd been on, and I think I managed to hit my head while throwing up.

[nollbit]

If you take an inch of pitch from many other rows + the 5,5 that allows you to fit an extra row or two.

Compare Lufthansas seatmap for the A320 vs A320neo. The neo has the Smartlav and two additional rows of seats.

http://magazin.lufthansa.com/content/uploads/2016/07/a320_si... http://www.lufthansa.com/mediapool/pdf/08/media_1555228708.p...

[grenoire]

Probably they take away seat space from others and put an extra row in the back (3 in 2 rows). Likely it gives just enough space to pass a threshold.