Stayed here for 3 nights with business.
One of the better hotels that I have stayed in in Helsinki and would have got 5 out of 5 for not the constant 'extras' like better wifi / bottle of water in room / bacon at breakfast.
Having said that as long as you are savvy then no issues what so ever. Breakfast apart from the bacon was good and varied - proper orange juice which for me is always a test of how good a hotel is.
Good location within walking distance to some excellent cheap restaurants and cafes, and about 10 mins from the main Station - get the Finnair bus from the airport for only €6.30 and walk.