The curtain are quite good quality, are definitely darkening the room (not fully blackout as on the sides the light can pass through) but that same story with all eyelet curtains. 

The reason I don't give it 5 starts is that I was expecting a set of 2 totaling 2.30m not each. They are so wide, I need just one curtain instead of 2 which doesn't really fit what I had in mind. I didn't bother to send them back and on the positive side, I'll have a spare in each room when I'll take them for dry-cleaning.