Opulent: Exceptional, unashamedly the best of sheer luxury. (£££££)

Luxury: Outstanding levels of 5* comfort, hospitality and facilities. (££££)

Premium: Excellent levels of comfort and hospitality and a wide range of facilities. (£££)

Mid-Range: Good levels of comfort and hospitality, with a reasonable range of facilities. (££)

Simple: Clean and simple, no frills. Often in areas of natural beauty or near wildlife reserves. (£)