The apartment is very cozy and VERY well located. It has all commodities but you also should be aware if you're tall that the ceilings are a little low but this is not really a problem ; it IS a problem if you're over 180 cm in the shower, since the head is fixed and right under the low ceiling.
We were welcomed by Alessandra, a friend of the hosts. She was extremely nice, and she gave us very valuable information on what to see and when to go where. She made our check-in very pleasant. The hosts though, Edo & Melany and Arianna, were very hard to get ahold of through Airbnb. We had to get Arianna's whatsapp to get information.
Other guests mentioned the place is very noisy, but we found it actually quite calm.
Overall the amenities were very good, with a welcome basket of crackers and snacks, towels, clean sheets, iron, kitchenware, soap, ... Also a guide to Rome with all the information you might need during your visit, whether it is monuments, parking, restaurants, etc.
Don't forget to go check the restaurant downstairs named "Claudia", it was easily one of the best food we had (several times !) in Italy, and the staff is awesome.