This hotel was right next to the train station and the main shopping/restaurant areas were a five-minute walk. So, in terms of convenience, it was spot on.
The onson/hot springs included were, for me (as a non-Japanese tourist), superb. Free ramen was included in the evenings although I didn't get to try the breakfast.
Considering there was construction going on during my stay the room was remarkably quiet. I thoroughly recommend Dormy Inn Oita and would stay there again if I ever return.