The Radisson SAS Plaza is an affordable hotel tucked away in the corner of downtown Helsinki. It is close to the central railway station and near bus, subway, and streetcar stops. The hotel has 291 rooms, and I stayed in one with standard accommodations.
The standard room is very compact and includes two twin-sized beds, which can be pushed together to make a full-size. There is an armoire that contains a color TV, refrigerator, safe, and iron/ironing board. A large closet and suitcase shelf help keep the room from being cluttered with luggage. It takes a rocket scientist to figure out the shower controls and a giant leap for mankind to step up and into the tub. The bathrooms are also heated to reinforce the Finnish love of saunas. The included buffet breakfast is not four-star dining, but it's better than average, with plenty of options.
The Radisson site claims that the standard rooms come with every amenity expected of an international first-class hotel. I've stayed in many hotels during my 32 years, and I wouldn't describe the amenities here as "first class" in comparison. All of the rooms are theoretically air-conditioned, but I remember my room being hot and stuffy. There may be air-conditioning, but it was not under my control, because I like the sleeping temperature to be downright frigid. The entire hotel is equipped for wireless internet access (WiFi), even though I had no need of it on my trip. The Finns love saunas, so the hotel has one, as well as a small fitness center. Most importantly, for me, was that the hotel was handicap friendly for my mother who needs wheelchair accessibility.
I was exhausted from the long trip via Newark International Airport into Helsinki, and I probably could have slept comfortably on a pile of rocks, nails, and broken glass. I stayed at this hotel for two evenings, and it was sufficient for my needs. Plus, I call NYC home, so I'm used to small, cramped living spaces. I'm sure there are better places to stay in the downtown area, but Money magazine ranks Helsinki as the 23rd most expensive city in the world, so they may be significantly more expensive.