The Onega Castle Hotel offers a convenient 24-hour reception as well as a steam room and a sauna for the guests. The hotel also offers guests the added convenience of a wireless internet connection. There is a gift shop within the hotel. Non-smoking rooms are available on request.

Families can relax knowing there is enough room for them to spread out in the specially designed oversized family rooms. Each room offers facilities such as a TV and a refrigerator.