We stayed at Royal Hotel Carlton for two nights during the first week of October. The hotel was great, the room was clean and comfortable. The staff were very friendly and helpful. The hotel is in a perfect location, about 10 minute walk from the train station and a 10-15 minute walk to Piazza Maggiore/Quadrilatero area. Bologna is an incredible walking city with the sidewalks covered by colonnades. The hotel has a bar area which was perfect for a nightcap after a day of exploring and having delicious Bolognese food. The bartenders, Ivo and Lorenzo, were outstanding. I wish I had gotten the names of the staff at the desk, because they were super too. Would definitely stay here again.