Really excellent location. This is within walking distance of the main train station, but not so close that the area has a seedy feeling. It's also very close to the Saint Sophia church. The desk staff is professional and efficient. Vienna Hotels feel safe and secure even for a solo traveler, which is why I chose them or a Jinjiang Inn when I'm traveling alone. The cleaning ladies are friendly. No English was spoken when I was there, but I feel like the staff would try hard to make themselves understood if you were a foreign traveler.
The only downsides are that the breakfasts here are mediocre -- they are more expensive than the Jinjiang Inn ones, but not as good. Vienna Hotels also have carpet, which tends to get a little gross in Chinese hotels. Mine wasn't dirty, but did look worse for wear.
My only complaints are the two nitpicky ones above. For sure, if I returned to Harbin for another vacation I would strongly consider staying in this hotel again, and would recommend it to a friend who is on a budget or traveling alone. It's a very good choice if you are visiting Harbin.