I booked the hotel after seeing all the positive reviews, and I was not disappointed. The hotel is a great value.
The price (about 100 usd/nite) was good for Rome. The room was small but quite comfortable (avg size for Europe), with a big bathroom (my tub was a Jacuzzi). They had wiFi with middle-of-the-road prices and a computer in the lobby (wasn't working while I was there). There was a nice small bar, and the staff were very helpful (I asked for something everyday). The breakfast was good (good scrambled eggs, pastries) except for the juice machine (watery).
The location wasn't a problem for me via public transportation. It is a 10-15 minute walk to the station, and a 10-15 minute ride to Termini. So, despite the fact that the hotel is on the periphery of Rome, access was not a problem at all. When you get off the Cornelia station, you need to walk south toward the park (or total darkness if you're arriving at night) and the hotel will be on your left. The park was nice, esp. in the morning. The hotel is quiet, despite its approx. to the main road, and away from the crowds.
There are some services near the train station. The pizza place was delicious (green "pizza kebab" sign). The restaurant next to the pizza place also seemed to be good (it was often packed), but I didn't eat there.
As opposed to many hotels in Italy, it was more expensive to book directly than via Expedia / Orbitz, so check those sites out when you book the hotel.
All in all, a very nice hotel, a great value, wonderful staff