I chose the hotel because of its okay location and moderate pricing.
After a nice welcome I got to my room which was a single bedroom.
Room overall was very clean. The bathroom also was very clean, but so tiny that i couldn't go to the basin or shower without touching the toilet seat with my legs. As it was winter, the room and especially the ground were really cold. Anyway, in summer AC is available at an additional 10,- EUR a night. Negative aspects are the bad soundproof and location.

The thing that annoyed me most, was the bad soundproof. I could hear everything what was happening in the floor, reception and surrounding rooms. That is, I heard the venerable hosts having a feisty Italian martial quarrel from 8PM - 11PM. I could understand every single word. Only after I put on my TV to make them realize that I was there, they spoke softly for about 1 minute and broke out again, not sensitive enough to shift their business outside or home. As it was more entertainment than anything else to me, I didn't care to much. Still, I find it rude that they didn't care about their guests being potentially disturbed.

What really made me feel uncomfortable at my stay there was that -vice versa- everything I did was audible outside in the hotel. Especially when there was no environmental noise (nighttime), somebody outside my room could notice my chewing a gum or dropping a matchstick. In that way, there was no privacy.
No going to the loo was unnoticed.

When I wanted to check out, I found the reception empty, had to wait 15 minutes (till 7AM) for somebody to come. My first credit card did not work there, but fortunately my second one did. Funnily enough, the employee had to call her boss to find out the rate. But in the end, all worked but time had passed.

I never joined breakfast, so theres no comment on the food.

I would definitely go for another hotel, located west from Termini Station, as the neighborhood there is much better to stay.

Still, at the Aristotele one can get a clean place to stay for a mediocre price.