1. Lake Atitlan, also known as Lago de Atitlán, is a stunning and picturesque lake located in the Guatemalan Highlands. The lake is surrounded by three volcanoes and several Mayan villages, creating a truly breathtaking and serene setting. The vibrant colors of the surrounding landscape make Lake Atitlan a popular destination for photographers and nature lovers alike.

2. There is no specific \"working time\" for Lake Atitlan, as it is a natural attraction that can be visited at any time during the day. However, if you are looking to take a boat tour or visit specific attractions around the lake, it is best to check the operating hours of those services. For general information or guided tours, you can contact the local tourism office in Panajachel, which is the main town on the shores of the lake. The phone number for the tourism office in Panajachel is +502 7762-2371.

3. There is no entrance fee to visit Lake Atitlan itself, as it is a natural attraction that is open to the public. However, if you are looking to take a boat tour or visit some of the villages around the lake, there may be fees associated with those activities. Transportation to Lake Atitlan is readily available from various towns and cities in Guatemala, with Panajachel being a common starting point for visitors. Buses and shuttles are available to take you to Panajachel from popular destinations like Antigua or Guatemala City. Once in Panajachel, you can easily find boats for hire to explore the lake and its surroundings.