Yes, but did you check if tax & charges are included ? I've done a lot of searching for hotel rooms recently & some look really good until you go further into the booking process & find there about another €50 in charges to be added on !
I was very happy with their sale as I got €30 off a hotel I was going to book anyway & I searched loads of websites & they were definitely more expensive.
Just shows it pays to do your searching...
If they guarantee though it should mean exactly that. Can it be checked out with some consumer organisation ?