There are an estimated 15.5 million hotel rooms worldwide. According to the World Tourism Organization, the global average occupancy rate for hotels is 65.2%. This means that on any given day, there are approximately 5.4 million hotel rooms empty worldwide.

The occupancy rate for hotels can vary greatly depending on location, time of year, and other factors. For example, hotels in tourist destinations are typically more full than hotels in business districts. Hotels are also typically more full during peak seasons, such as summer and holidays.

The number of empty hotel rooms can have a significant impact on the hotel industry. Empty rooms represent lost revenue for hotels, and they can also make it difficult for hotels to cover their operating costs. In some cases, hotels may even be forced to close if they have a high number of empty rooms.

There are a number of things that hotels can do to try to increase their occupancy rates. These include offering competitive rates, running promotions, and targeting specific markets. Hotels can also try to improve their online presence and make it easier for guests to book rooms.

The number of empty hotel rooms worldwide is likely to continue to fluctuate in the coming years. However, the overall trend is likely to be positive, as the global travel industry is expected to continue to grow.