Hotel Le Petit Duquesne offers a variety of room types including family rooms, single rooms, studio rooms, and double rooms. The family rooms can accommodate up to 5 adults and have 1 twin bed and 2 double beds, while the single rooms and double rooms can accommodate 1 and 2 adults respectively, with a twin bed in the single rooms and a double bed in the double rooms. The studio rooms can accommodate either 2 or 4 adults, with a combination of twin and double beds. Smoking is not allowed in any of the rooms.

Based on the provided information, guests at Hotel Le Petit Duquesne can spend their time at the hotel enjoying the various leisure amenities available. As an adults-only hotel, guests can relax and unwind in a calm and peaceful environment.

While specific details about the leisure amenities are not provided, it can be inferred that the hotel may offer amenities such as a spa or wellness center, swimming pool, fitness center, or a lounge area where guests can socialize or enjoy a drink.

Additionally, guests can indulge in the hotel's dining options, which are not explicitly mentioned but can be assumed to be available. They can savor delicious meals and drinks, and perhaps even explore local cuisine.

Overall, guests at Hotel Le Petit Duquesne can make the most of their stay by taking advantage of the leisure amenities provided by the hotel, ensuring a relaxing and enjoyable experience.