The average number of days that guests stay, calculated by dividing total occupied room nights by total bookings. It can be determined for a subset of rooms or the whole hotel.

Average Length of Stay (ALOS) is a metric used in the hospitality industry to measure the average duration of guests' stays in a hotel. It is calculated by dividing the total number of occupied room nights by the total number of bookings or guests during a specific period.

ALOS is an important metric for hotel managers as it provides insights into guests' behavior and helps to make informed decisions related to revenue management, staffing, and marketing strategies. A higher ALOS can indicate guest satisfaction and loyalty, while a lower ALOS may suggest that guests are dissatisfied or that the hotel's marketing strategies need to be adjusted.

Factors that can influence ALOS include seasonality, pricing, amenities, location, and events in the area. Hotels can use ALOS as a benchmark to compare their performance against industry standards and identify areas for improvement to increase revenue and guest satisfaction.