Very nice and classy apartment in the historic center of Rome. All sights are within walking distance and the Metro station "Spagna" is just a few steps away. The apartment has two bedrooms, two bathrooms and a fully equipped kitchen. There is also air conditioning which keeps the apartment cool on hot days. I recommend booking the apartment for 2-4 persons. There were no problems at the check-in, although we had to call Ghila several times before Andrea (who welcomed us at the apartment) could open the door for us. After the check-out, we were able to leave our luggage at the apartment for two hours.
Unfortunately, the apartment was very loud as the windows were old and not properly sealed. Especially during the night I had the impression that the cars drove by right next to the window although the apartment is located in the 4th floor. In addition, you could hear the guests living in the second airbnb on the same floor shouting and talking through the walls. However, the noise is the only crucial element I could criticize.
Overall, I enjoyed it very much at Via Belsiana and I got a lot of value for money. If you are noise-sensitive, however, you should maybe choose another apartment.