We booked this hotel after arriving in Rome. The hotel we reserved was near the train station and not as close to the sights as we would have liked. After a while, we realized why this hotel had vacancies in the middle of the busy tourist season. We had two rooms for 4 nights,so we spent a considerable amout. The rooms are small, but very clean. However, someone staying at the hotel (or perhaps one of the staff) smoked (there is a new law in Italy that no smoking is allowed inside hotels). Our entire floor reaked of cigarette smoke that definately infiltrated our room. We complained numerous times but the staff just insisted that there was no smoking allowed in Italy's hotels. The night clerk just dismissed this and told us to talk to the morning staff. Because we wanted two adjacent rooms, we did not request a change. Also, our rooms were in the back of the hotel which backs up to a small alley with a bar. This bar is obviously a favorite spot for tourists,because it was so loud from about 11pm-2am every night that we could not sleep. It was nice that breakfast was included, but it was mediocre at best. The coffee was instant from a machine and was not very good (although the staff would bring fresh coffee (Italian) on request. The orange juice was really artificial, but the pastries were good. They did not provide fresh fruit for breakfast. The location was the hotel's best feature. We were able to walk to all of the major sights; no need to board one of the packed buses! Definately do not stay at this hotel; it is not worthy of its 4-star rating. With a few changes, they could improve.

Spent a couple nights there on business.
As mentioned in other reviews the location is great - near the major sights.
I must have been a bit unlucky as my room was small and unfortunately opened onto the main road which turned out to be a nightmare. I practically felt like I was sleeping on the sidewalk. Extremely noisy. However I was only there for a couple nights.
The room was small as mentioned but clean.
Breakfast was Ok with the usual cold cuts, yogurt, cereals, etc.
The hotel is a bit aged but not really an issue. The front desk was courteous and helpful.
All in all OK for a couple nights - just try to get a room internally.

This was a great hotel with very friendly staff. Room was large with bedroom and living room with pull out coach. Bathroom was small but did the job. Great location, right by the Via Nationale, which is a great shopping district and has great restaurants nearby. Pricey if your on a budget but worth the stay. Breakfast was great for a Euro Hotel because it had a very large array of foods.

Local places to stop at:

Rockadile bar, you get to sit on the floor in a dark, spooky bar....its great.

Restaurant Zeus, try the desert.

My wife and I stayed at the Traiano for five days last week. I was just delighted about the quality, given the price we paid. I think we got the best room in the hotel (by accident): room 211. It's fairly big and the only room with a big, walk out balcony. We faced a busy street but the sound-proofing was excellent; zero trafffic noise. Anyhow, the location was great, the room was just fine, maid service was above average, the staff were friendly and responsive and breakfast was quite acceptable (although a bit more fresh fruit would be nice). For tourist stuff, the location could not be better. Compared to other comparably priced hotels in Rome or in other parts of Europe, this place was great.