This was, for my wife and I, our first airbnb experience and if it is indicative of what to expect in the future, sign us up!
Gna was very easy and responsive to communicate with. She offered to pick us up at either the airport or the train station for less than what a taxi would charge. That made finding the location, getting the keys and being shown the room very easy and enjoyable.
Our room was spacious, clean and well appointed. There were two shared bathrooms, a well appointed kitchen, a common area and we were provided with eggs and bread, etc for breakfast.
The location is close to the Spanish Steps, Trevi Fountain and there are many bars and restaurants in the near vicinity. The nearest underground station about a 5-10 minute walk downhill from this location.