The crossword solution for the term 'user-friendly feature' is 'AMENITY'. An AMENITY is a feature of a product or service that makes it more enjoyable or convenient for the user. It is often used to refer to features of a hotel, such as a swimming pool or spa, but can also be used to describe features of a product or service, such as an app or website. Amenities are designed to make the user experience more pleasant and enjoyable.