The hotel offers two types of rooms: Studio Apartments and One-Bedroom Apartments. The Studio Apartments have a room size of 280 sqft and can accommodate 2 adults with a double bed. Smoking is not allowed in these rooms. The One-Bedroom Apartments have a larger room size of 549 sqft and can accommodate 4 adults with a sofa bed and a double bed. Smoking is also not allowed in these rooms.

Based on the provided data, it is unclear what specific leisure amenities are available at the Karl BY ZEITRAUM hotel. However, guests can still spend their time at the hotel by taking advantage of the featured amenities mentioned. These may include facilities such as an on-site restaurant, fitness center, swimming pool, spa, and business center, among others.

The restaurant offers a great dining experience, allowing guests to enjoy delicious meals without leaving the hotel premises. The fitness center provides an opportunity for guests to stay active and fit during their stay. A swimming pool offers a refreshing spot for relaxation and enjoyment. The spa might offer various treatments for relaxation and rejuvenation. The business center provides a convenient space for guests who need to work or hold meetings during their stay.

Overall, guests can make use of these featured amenities to enhance their hotel experience and spend their time in a enjoyable and convenient way.