Very central location - 7 minutes walk from Termini or 2 minutes walk from Repubblica station. Via Modena where the hotel is located is very quiet and small. It might be a bit tricky to find it, so the easiest way to reach the hotel is to take metro from Termini to Repubblica (1 stop) - walking with luggage in the crowded area around Termini is not nice. Exit the Repubblica station choosing exit to Via Nazionale. As you exit turn rigth to Via Nazionale, go along the street and turn right to the first street - it is Via Torino. Then take the first rigth to the left, it is via Moden - and the hotel is just around 15 m from that point on Via Modena.
The hotel staff makes you feel at home, everybody is very smiling and helpful. Single room is small but very clean and has all the necessary staff - TV, fridge, safety box, hairdryer. The bathroom is spotless. Breakfast is rather basic but enough to start the day.
The hotel also provides free Internet access.
I believe for Rome which is quite expensive the hotel is adequately priced.

We had a great stay with Hotel Adler. The hotels is in a great location, close to Termini & Repubblica train stations. It's surrounded by plenty of restaurants and pizzerias. The rooms are pretty quiet; we didn't hear much street noise. We stayed in two different rooms, and both were nice and always kept clean. The bathrooms are small, but clean. Breakfast was always delicious. Alessandro was very helpful, he even helped us with our travels to L'Aquila, which he had to do some research & make phone calls. We plan to stay in Hotel Adler again.

When Alessandro signs "your personal concierge in Rome" in his emails he really does mean it. Not only is this father and son run business very efficiently run in a low key way, they also go out of their way in assisting all sorts of tourist needs (i.e., arranging reasonably priced shuttle service to ports/airports, booking train tickets, assisting in short term luggage storage). Bruno also does a great job making you feel very welcome.
The bathrooms though small are very clean, the beds are clean, very good continental breakfast. Totally fits the needs of the traveller who values location, cleanliness and great service without necessarily paying an arm and a leg for it.

Would definitely go back in a heartbeat.

Hotel Adler was perfect for our week's stay in Rome. It is a well kept small hotel on the second level of a building and there is an elevator. The reception area is on the second level but there are rooms on both the second and third floor. The staff was very nice and knowledgeable and gave good suggestions for restaurants and made reservations at various attractions for us. The room was nice and clean and comfortable. The price was good for Rome. The breakfast that was included in the price had a lot of variety and the setting was very nice. Internet is available....just ask the person at reception for your code and password. We found the hotel in Rick Steves Travel Book and we enjoyed it very much. We'd stay there again in a heartbeat. You can make reservations online and Alessandro will respond promptly. It was a very nice experience.