1. Margaret Island is a beautiful and peaceful park located in the middle of the Danube River in Budapest. The island offers visitors a variety of attractions, including beautiful gardens, a musical fountain, a small zoo, a swimming pool complex, and a sports center with tennis and mini golf. There are also several restaurants, cafes, and bars located on the island. One of the most interesting facts about Margaret Island is that it was used as a royal hunting ground during the 13th century when it was called \"Hares Island\".

2. Margaret Island is open to visitors every day, and there is no admission fee. However, some of the attractions on the island may have their own separate entrance fees. The phone number for the island’s management is +36 1 452 1564.

3. There are several ways to get to Margaret Island, including by foot, bike, or public transportation. The island can be reached by taking tram 4 or 6 to the \"Margit híd\" stop. From there, visitors can walk or bike across the bridge to the island. There is also a boat service available that takes visitors from various points along the river directly to the island. Tickets for the boat service can be purchased at the dock or online.