Probably one of the best hotels in the world I have stayed. They have beds with egyptian cotton, B&O TVs and ocean view so it is really possible to forget the work issues. Especially after unbelievable dinner in their restaurant.
It's a pretty nice place, somewhat overly designed and conceptualized. Rooms are way more cozy than the lobby – and the Ahjo Club is an, ahem... interesting stage at night. My review along with images can be found right here: http://www.guidebook.se/?p=645
The "Best of Finland" breakfast foods are quite tasty, but we were slightly disappointed with the atmosphere - too many people, several dishes were constantly bare, sort of hasty way to get people out (hoovering and rushing the next sitting for brunch).
I stay at Klaus K often and I do like the bar and the breakfast which is very Finnish and lovely.
But the rooms are absolutely tiny and the pillows are ridiculous, meaning I've never ever had a good night's sleep there.
If it's rest you need, or you're going to be staying in your room for any length of time then I'm not sure this is the place for you
Very nice and central historic hotel in Helsinki. The breakfast room is breathtaking, and the breakfast consisting of ample supplies of both continental and local dishes. Good rom standard. Do not book by internetservices such as booking.com and hotels.com, as they are 60-70€ more expensive than booking directly at the hotels own website