We had an overall great stay in Helsinki. We were a group of friends renting two different apartments (sauna apartment and 1-bedroom apartment). I checked beforehand the exact location of them with the hotel as the website only states "various adresses" and we wanted to live at the same spot. I recommend to do so as the adress stated is actually the office where you check in. However, this was the actual location of our apartments and we were very satisfied! Close to Kamppi with restaurants, bars and shops, easy access to bus or tram if you wish. The sauna apartment was located in a very new building, modern interior and had everything you could need. But for 4 persons an extra key would have been good. Only got one. The 1-bedroom was in an older building, quite charming but thin doors, (partly glass) so it could get a bit noisy from the stairway and the neighbours, especially in the morning. The apartment was facing the inner yard though so not any noise from traffic. It had eveything we needed for our stay so we were happy. Would return again!