I spent 2 nights in the relatively new Radisson Red. Centrally located next to the Central Station and walking distance to the shopping streets and location attractions. Please note, there's currently road works between the Central Station and the hotel, which made it a bumpy gravelly trip hauling the large suitcase to the hotel.
I had a lovely corner room with views of the park. Clean and quiet rooms with plenty of lights and a big screen smart TV. There's also a gymand sauna in the basement, although I didn't use these.
My booking included buffet breakfast, which had a reasonable collection. The highlight was the made to order omlettes, with the option of adding reindeer meat in it.
Overall a pleasant stay, and I would consider staying here again if I visit Helsinki again.