We were traveling with our one year old baby, and this was truly the perfect hotel!
A few things that we liked: The hotel provided a crib, free of charge, which was extremely convenient. We booked the triple room, which meant there we could close the door to the beds when the baby was sleeping, and we also had a bathtub, which made bath time so much easier! The free breakfast was so convenient (tip: request espresso from the wait staff rather than the automatic machines) and they even had high chairs! The staff were incredibly friendly and helpful. It is also nice that eventually there will be a restaurant in the hotel, but we didn't get to experience this.
Cons: My biggest complaint is that we chose this hotel for the convenience of the restaurant, which was under construction during our stay. We ended up being more flexible than anticipated with the baby, but a prior notification would have been nice. The room itself was pretty basic in terms of decor, and the breakfast was not particularly impressive.
Location: a block from the Trevi Fountain, was within 20 minutes walking distance of the major sites. It was close to one of the better shopping areas north of the hotel. If we hadn't had the baby I might have stayed in a neighborhood with better food/ less touristy, but for a family this was perfect!