Great location, warm friendly staff (they let us check in early which was a major plus after flying all night). Room was small, typical from other feedback, but it was quiet and very clean. We walked to all the sights including the train station when we departed, location was a plus. Breakfast was outstanding. If your tipping the scales over 300, you might not fit in the elevator but that may be the least of your worries!

Also, the location is perfect if you need to be near Termini Station.

A good value at under 200 euros.

we stayed at the hotel for one night after a week in tuscany, and before our flight out to LAX. the hotel was clean, charming and the breakfast in the morning was great before our flight. they arranged transport to the airport - easy. we walked to the hotel from Termini (train station).
after a week in tuscany, we enjoed Guinness, fries and Black and tans at the pub across the street!

Just returned from a three night stay at the Britannia which proved a good base for exploring Rome, Plus points were good access to transport, Termini etc, convenient walking distance to many of the main attractions and friendly and helpful staff. Negatives which have all been commented on by others were the smallish size of the rooms and the cost for the facilities available. Rome is now a very expensive city and the hotel is right in the centre but nevertheless 200 Euros a night for a hotel that is no more than 3 star is a bit steep. Reception staff though were unfailingly helpful including arranging a room move for us to a higher floor with more natural light and the hotel tries hard with fish tanks in each room, plastic ducks and bamboo plants to create an individual atmosphere which mainly succeeds. We all made use of the Irish Bar on the opposite side of the road which runs a happy hour from 7-8 each evening. This reduces the price of a pint from 6 to 4.8 Euro. Handy supermarket as well at the other end of Via Napoli which has a wide range of food and drinks at reasonable prices.