The Hotel Colonna Palace is accessed directly from Piazza Montecitorio, the natural continuation of Piazza Colonna, and from Via Colonna Antonina, where the south side of the hotel faces. The common areas of the hall are furnished with period furniture and are divided into characteristic corners and refined lounges that look out through large windows onto the Piazza, the Obelisk and the entrance to the Palazzo del Parlamento. Two small meeting rooms for up to 15 people each complete the structure.
The most characteristic element of the hotel is the Roof Garden. Located on the 7th floor, this splendid panoramic terrace offers a spectacular view of the city; fascinating colours envelop the ancient roofs of Via Colonna Antonina and enchanting lights paint the incomparably beautiful views of "Old Rome". In addition to this marvellous location, the 7th floor is completed by a number of small internal rooms with their own facilities.