Book it now. You won't regret it.
Both the location and Roberto made our trip from Australia to Italy with our young family amazing.
The Location - wow.
You are right in the heart of town. 10 steps from a wonderful cafe, 100m from the grocery store, 2 minutes from 50 restaurants, 3 minutes from the Spanish Steps and Spagna metro stop which takes you easily to the colosseum, Vatican, 5 minutes from the Villa Borghese park where you can rent bikes.
It was so central we did 3 activities per day. Breakfast at home, morning activity, home to rest, lunch out and afternoon activity, back home to rest, out for dinner.
Our Host - brilliant.
Roberto was amazing. His communication was clear and fast. He confirmed before we got there, was there when we arrived, responded when we had a question and even followed up after we left.
As an example, when we arrived he told us about the breakfast at a local cafe. We said we have breakfast cereal (such Aussies) and he went and got us bowls as it's not a normal Italian thing. He brought milk and cookies for the kids as well.
I've stayed at more than 30 Airbnb's and he's one of the best.
As I said, book it!