According to forum posts, several museums in Copenhagen offer free entry. Notable among these are the Davids Samling (David Collection), which is always free. On Wednesdays, visitors can enjoy free entry to Thorvaldsens Museum, Nikolai Kunsthal, and Københavns Museum (City of Copenhagen Museum). Additionally, Kunsthal Charlottenborg offers free entry every Wednesday after 5 PM, and the Ny Carlsberg Glyptotek is free on the last Wednesday of every month.

Travelers have called out specific museums as must-visits. The Ny Carlsberg Glyptotek is frequently recommended for its impressive art and sculpture collections. Rosenborg Castle is popular for its extensive collection of royal artifacts, including the crown jewels. The National Museum is highlighted for providing a comprehensive overview of Denmark's history and culture. For modern art enthusiasts, the Louisiana Museum of Modern Art is highly praised, especially for its integration of art and nature.

According to forum posts, Stromma and Netto are popular choices for canal tours in Copenhagen. Stromma offers more detailed historical commentary during its tours, while Netto provides cheaper options. Both companies operate tours that return to the starting point, with Stromma offering additional hop-on/hop-off stops during the high season.

Some travelers suggested starting a visit to Copenhagen with a canal tour as it provides a good overview of the city and includes sights like the Little Mermaid from the water. These tours are generally regarded as enjoyable and informative, offering a different perspective on the city’s attractions.

For those visiting with elderly individuals, it's important to choose canal tours with heated boats, especially during colder months. Travelers have specifically inquired about heated options to ensure comfort for all participants.

According to forum posts, Copenhagen offers a robust public transport system that includes metro, buses, harbour boat buses, metropolitan S-trains, and regular trains. Travelers have noted that the system is efficient, safe, and the tickets purchased are valid across all these modes within the specified zones and time limits.

Some travelers said that the metro and trains are reliable options for commuting from the airport to the city center, with a typical fare costing around 36 DKK. For broader city travel, users can purchase a City Pass which allows unlimited travel in specified zones, making it a convenient option for tourists.

For many users, journeyplanner.dk is frequently recommended for checking detailed public transport schedules and routes. This is particularly useful for first-time visitors or those unfamiliar with the city's public transport system.

According to forum posts, Copenhagen widely accepts credit and debit cards, including contactless payments like Google Pay. Travelers mentioned that cards are preferred over cash, even for small amounts, and that it is common for people in Denmark to go extended periods without using cash.

Some users noted that while Euros might be accepted in tourist-centric areas, they are usually taken at a poor exchange rate, and change is given in Danish Krone (DKK). The general advice leans towards using cards or obtaining DKK for transactions.

Travelers have called out that in many establishments, tips can be added to the card payments, although tipping is not customary as service charges are typically included. It was also highlighted that cash might still be necessary in rare instances like certain bus services that do not accept cards.

According to forum posts, the luggage lockers at Copenhagen airport (Kastrup) are generally available, though there's no option to reserve a locker in advance. The location of these lockers is in a parking garage.

For travelers looking to store luggage during a brief trip away from Copenhagen, it is possible to leave suitcases at the airport. This information is confirmed through the airport's official resources, ensuring that travelers can securely store their luggage while visiting other locations before continuing their journey in Denmark.

According to forum posts, taxis in Copenhagen are plentiful and can be easily found at taxi stands in key locations like the airport and central station. Users can also book taxis via phone or through apps like the 4x35 App.

Some travelers mentioned that taxis in Copenhagen are expensive but regulated to prevent overcharging. Typical costs are around 30-40 DKK as a start tariff plus 8-9 DKK per kilometre and 6-7 DKK per minute during weekdays. For a group of six, a taxi minibus might cost under 200 DKK, while two regular taxis would cost about 150 DKK each.

Travelers have called out specific apps for ease of use in booking taxis and managing travel. The Taxa 4x35 app is recommended for taxis, and the DOT app is useful for purchasing public transport tickets.

According to forum posts, there are several bike rental options in Copenhagen with varying prices. Lucas Cykler and Søgade Cykler offer some of the lowest prices at DKK 65 and DKK 85 per day respectively. For a wider selection, travelers can also consider Donkey Republic, which operates via an app and has multiple pick-up and drop-off locations.

For those seeking specific types of bikes, such as e-bikes or cargo bikes, some travelers said that Rent A Bike Pedalatleten and KP Cykler provide these options. However, availability might vary, and it's advisable to check current operational statuses as some rentals like KP Cykler may be temporarily closed.

Travelers have called out that while most rental bikes come with integrated locks, it’s important to familiarize oneself with local cycling regulations and the layout of bike paths, especially since cycling paths can be crowded and fast-moving.

According to forum posts, travelers looking for hotels near Copenhagen Airport have several options. Some travelers mentioned the Clarion, Comfort, and Scandic hotels as being close to the airport. Additionally, another user pointed out that there are two hotels right beside the airport, specifically naming Clarion and Comfort, and one just around the corner, which is Scandic.

Travelers have called out that staying in the city center might also be a viable option due to the efficient transport links, with the city center being just a 12-15 minute train or metro ride away. This allows for easier exploration of Copenhagen during a short stay.