My boyfriend and I stayed at the River Palace in February 2009 after reading the reviews on here, and getting an excellent rate from Expedia. Given the rate that we paid, we weren't expecting too much from the hotel, but we were so surprised when we arrived!
The check-in staff were really friendly and helpful. We had got an early flight into Rome, and although our room was not ready when we arrived at the hotel (around 10am), they allowed us to store our bags so that we could go and explore the city.
The room was small, as many people have said in their reviews. However, it was very smart and clean, and had everything we needed. After all, we were there to see the city, not to sit in our room, so it really wasn't a problem.
The continental breakfast included in our room rate was fantastic! In my experience, continental breakfast usually consist of a limited choice of breads and cheese, but the breakfast at the hotel was extensive, with a wide range of meats, cheeses, fruit, cereal, even sausages and bacon. There was also some amazing fresh cakes on offer.
Location-wise, we couldn't have asked for more. Just a short walk was the Spanish steps, and all the main sights were an easy walk down the main street. The hotel also benefits from its proximity to the Villa Borghese, a lovely park which provides a bit of a break from the busy city, and is definately worth a visit.
The hotel is only 2 minutes from the Flaminio metro station, which is only a few stops on the metro from Termini. We got the Terravision bus from Ciampino airport to Termini, and from there we took the metro to the hotel. This was considerably cheaper than getting a taxi from the airport, and was very convenient.
We were very impressed with this hotel and would not hesitate to stay there again.