The Albergo Cannon d'Oro hotel offers a range of room types including Quadruple, Double or Twin, Triple, and Single rooms. None of the rooms allow smoking. The rooms have different sizes ranging from 118 sqft for the Single room to 248 sqft for the Quadruple and Triple rooms. The rooms accommodate different numbers of adults with the Quadruple and Triple rooms accommodating 4 and 3 adults respectively, while the Double or Twin room accommodates 2 adults and the Single room accommodates 1 adult. The beds in the rooms vary, with the Single room having 1 Twin bed, the Double or Twin room having 2 Twin beds and 1 Queen size bed, and both the Quadruple and Triple rooms having 6 Twin beds and 1 Queen size bed.

From the provided data, the Albergo Cannon d'Oro hotel features a rooftop terrace where guests can relax and enjoy panoramic views. Additionally, there is a bar/lounge on-site where guests can socialize and have a drink. The hotel also provides concierge services, which can assist guests in planning their leisure activities in the city.

While the data does not specify any other amenities, it is common for hotels to offer additional facilities such as a fitness center, spa, swimming pool, or restaurant. However, without specific information about these amenities at the Albergo Cannon d'Oro, it is not possible to include them in the answer.

Overall, guests at the Albergo Cannon d'Oro can spend their time enjoying the rooftop terrace, socializing at the bar/lounge, and utilizing the concierge services to explore leisure activities in the city.