1. Nice Old Town, also known as Vieux Nice, is a charming district located in the heart of the city of Nice on the French Riviera. It is a historic area that features narrow cobblestoned streets, colorful buildings, and traditional architecture.

You can explore the Old Town on foot, and discover quaint cafes, restaurants, shops, and museums. The Place Rossetti is a popular spot, which is a beautiful square filled with cafes and gelaterias. You can also visit the Cathedral Sainte Reparate, a 17th-century Baroque church that is in the center of the Old Town.

2. The Old Town is open 24/7, and there is no admission fee to enter this area. However, individual shops, cafes, and museums may have their own opening and closing times.

3. There are several transportation options to reach the Old Town of Nice, including:

- Tramway: Take line 1 or 2 and stop at the \"Cathédrale - Vieille Ville\" station.

- Bus: Take line 7, 10, 11, 14, 15, 17, 22, 27, 30, 57, or 59 and stop at the \"Promenade des Arts\" or \"Vieille Ville\" station.

- Train: If you arrive in Nice by train, the main train station, Gare Nice-Ville, is located about 1.5 kilometers from the Old Town. You can take tramway line 1 or 2 or buses 7, 9, 10, 22, 27, or 38 to reach the Old Town.

- Taxi: Taxis are easily available in Nice and can bring you directly to the Old Town.

Overall, the Nice Old Town is a must-visit destination if you are traveling to Nice and want to discover the charm, history, and beauty of this iconic area on the French Riviera.