The mat itself is actually pretty good, but it stinks really disgusting (and I'm usually not as sensitive). I've even used and after having my whole (rather small) bathroom smelled the mat. Now it is about since 2 weeks to clear my on the balcony, but still smells. The mat would definitely deserves more stars, but unfortunately it is useless for me. Hope you hear someday to smell.
CHANGE:
So, to really, really long time, the smell has dissipated. Meanwhile, the mat is great though and there's nothing to complain about. Therefore, now there's also 4 stars, instead of the initially only one star.