The hotel offers various types of rooms including Double or Twin Rooms, Triple Rooms with Shared Bathroom, Single Rooms, Single Rooms with Shared Bathrooms, and Quadruple Rooms with Shared Bathrooms. Smoking is not allowed in any of the rooms. Room sizes range from 86 sqft to 215 sqft. The rooms accommodate different numbers of adults and children and have different bed configurations including Queen size beds, Twin beds, and Double beds.

Guests at Annex Copenhagen have various leisure amenities available to enjoy during their stay. One option is to challenge friends or family to a game of mini golf, located on the hotel premises. Alternatively, guests can unwind and socialize at the hotel's bar.

In addition to mini golf and the bar, the hotel also offers bicycle rental for guests who want to explore the city on wheels. They can easily rent a bicycle from the hotel and discover Copenhagen's attractions at their own pace.

For those who prefer indoor activities, there is a pool table available at the hotel. Guests can engage in friendly competition while enjoying a game of pool.

Furthermore, Annex Copenhagen provides board games and puzzles for guests who prefer quieter, more relaxing leisure activities. This gives guests the opportunity to spend quality time together while engaging in fun and stimulating games.