The Marylebone Inn offers Single, Double, and Quadruple rooms. The Single room accommodates 1 adult with 1 Twin bed and is 86 sqft in size. The Double room accommodates 2 adults and 1 child with 1 Double bed and is 161 sqft in size. The Quadruple room accommodates 4 adults and 2 children with 2 Double beds and is 377 sqft in size. Smoking is not allowed in any of the rooms.

Unfortunately, the provided data did not include any information about the featured amenities or other amenities offered by Marylebone Inn. Thus, it is not possible to provide an accurate answer to the question regarding how guests can spend their time at the hotel. It would be helpful to have more information about the specific facilities and services provided by Marylebone Inn in order to give a comprehensive answer. Nonetheless, based on the fact that it is a hotel, guests can generally enjoy leisure activities such as relaxing in their rooms, dining at on-site restaurants, exploring the surrounding area, or utilizing any recreational facilities that might be available. It is recommended to contact Marylebone Inn directly or consult their website for specific details on how guests can spend their time while staying at the hotel.