Positives were Viviana is friendly and communicative, and the apartment is close to the metro station. I was able to early check after I paid the fee.
Negatives were the elevator was very slow and it required to open total 7 doors to be at the apartment (1 at the entrance of the building, 1 inside the building to the elevator, 3 elevator doors, 1 door before the apartment, 1 apartment door) . Also, note that there are 10 stairs before you get to the elevator. So in and out, it took a bit of time.
The listing says amenities such as shampoo, breakfast provided (first day 2 supermarket mini chocolate bars was it), Nespresso machine (there was this espresso machine where you have to make it manually, not "Nespresso" capsule machine), hot water kettle, etc. I did not see them. Also the distance described in the listing is not correct. Please use the map on your phone to calculate the duration (for instance, to Duomo, walking is about 30 mins so you can take metro.)
One day of my stay, the power went out and the host mentioned it's because I was using washer and stove at the same time and instructed me to use only one appliance at a time. So it means, you can't cook on the stove while A/C is on, or use microwave at the same time, etc. Despite the host told me that it's like this in Italy, it is hasn't been the case in any other city in Italy I stayed (i.e.,. Rome, Bologna, Napoli, Firenze, etc.); however, I did follow the instruction to avoid any power outage.
I hope my detailed review helps.