My wife and I have stayed in a dozen or so AirBnB's in a number of countries and this was our favourite.
The deck is perfect -- the picture that shows the church dome in the advertisement is entirely accurate. The deck is large and private with flowers all around and holds a table that seats 6 plus a seating area and an outdoor sink.
The unit has been very recently renovated. It is spotless. Wood floors, stainless steal appliances and granite/marble bathroom. The furniture is all new (think living in a hip IKEA catalogue). The main living area is spacious with a couch that could make into a bed (we didn't need this) and glass floor to ceiling windows and doors that open onto the deck.
It is the only unit on the 7th (top) floor and so is very quiet. We had perfect weather and kept the windows open and in the morning we would wake up to the sound of church bells ringing in the distance -- this isn't annoyingly loud - it is lovely. You can't hear any street sounds.
The bedroom has a queen bed and a large closet with drawers and shelves as well as hanging space.
And the location is incredibly central. Just a couple of minute walk to the Campo di Fiori. 5 minutes to the Pantheon. 5 minutes across the river to Trastavere. We walked everywhere and had the most fun just wandering down streets, stopping for cappuccino or wine when we were tired and soaking up the energy and history of Rome.
The host was personable and very responsive.
We will recommend this unit to our friends and family.