LH had two versions of the A300-600
One was as described.
The other was simply crammed full of Y seats, 2-4-2 and for a long time, they sold the front cabin as business class! The customer pressure forced them to sell the middle 4 as 2, to allow some space. Horrible seats, not as nice as the converter seats on the B737s/A32xs at the time.
I suffered to and from Greece quite a few times. Quite awful.