Not too much to complaint about, actually. It is located slightly NE of Termini station, the quiet side of the station. On the other side, apparently people can feel their rooms moving when trains go by (certain rooms and locations).
The building itself is old, but they did a good job on the renovation (we were in 801). The shared walls are lined with sound proofing pads, and then the other walls are painted the same color (as seen in online pics).
Few small complaints - The room has two twin beds, my mattress was new, while my wife's was old - sinks in the middle.
The room door is not self close, which is good for noise, but you have to make sure it is closed properly each time you close it.
The bathroom has tile flooring, so it is really slippery when wet. For some reason, the shower area is also lined with same type of tile, so you should put a towel there, to prevent slip.
The free buffet breakfast was decent, there are fruits only the watermelon is fresh), pastries, cakes, scramble eggs, bacon, bread, cold cuts, cheese, juices and milk. Every day, they would have a dish of the day, such as curry chicken, ginger chicken and some sort of rice dish.
Overall, we are extremely pleased with our stay, and we'd recommend this hotel to others - couples, family and business travelers.
Lastly, the tourism tax in Rome is pricy (compared to Paris, 1.65€ per person per night, for example), "A tax is imposed by the city: EUR 6 per person, per night, up to 10 nights. This tax does