The data shows the number of nights for the number of people for whom the accommodations were booked. For example, if a family of four stays two nights in one place, this is counted as eight nights. The data is normalized per 1000 inhabitants and shown for each individual month. The data is focused on short-term stays like apartments and holiday homes and excludes hotels. Hotels are defined by Eurostat as establishments that provide furnished short-stay accommodation with daily cleaning, bed-making, and food and beverage services. The data was provided by platforms Airbnb, Booking.com, and Expedia Group.