My daughter and I stayed at Maria Cristina's. The apartment is very clean, and as others said, she left everything we could have needed. We used the washing machine and the dishwasher. There is a fridge and a stovetop, and plenty of dishes. The place was very clean, and it was plenty of space for 2-4 people.
When you are offered the app to open the front door, accept it! It's hard to open with the key. The neighborhood was so great. We were there for 8 days, and we could easily walk to a new restaurant every night. The previous recommendation for Alice's Pizza and the gelato two doors down was spot on... we ate it many, many times. There is an Asian restaurant right there too, and after many nights of pasta and pizza, we had a really great dinner there as well. Bus and subway travel were very convenient. The location is great.
The bed is very firm, which I noticed was the same in all three AirBnb's that we booked in Italy. The Netflix was a nice touch for the times that we just hung around the house. Wifi worked perfectly indoors, and the air conditioning was great. Really, no complaints. This is an ideal place to stay for short or longer term. Two thumbs up!