One thing is certain … majority of tourists don’t want to spend 24 hours a day inside the hotel room, especially if they are on vacation. However looking at the majority of accommodation websites it’s easy get a different impression. Most accommodation websites only feature content related to accommodation, not a word about things tourists can do once they visit the destination.
For example if your guests are mostly families, then provide relevant content about family vacation, what to see and do.
Also, if you want to extend the season, research some less known niches on the travel market. For example, tens of thousands of people each month are searching for painting holiday, bird watching, dental tourism and many other specific market niches.