Shoestringbarbados.com is a great place to start, offering accommodation from around £14 a night, and a host of suggested itineraries, including water sports, mountain biking, golf, tennis and even goat racing on the beach.
Another option for Barbados is Intimate Hotels (Intimate Hotels of Barbados â€“ Guide to affordable Accommodation in Barbados!
, 01252783715) - a reasonably priced group of over 40 small hotels, apartments and guesthouses along the coast. The Halcyon Palm Apartment Hotel offers comfortable double rooms surrounding a tropical garden for £42 a night, and is close to restaurants, a poolside bar, and the west coast beaches.
Early risers may also like to take advantage of Hike Barbados (Barbados.org/hike.htm) - the free tours begin at 6am and take you through cane fields, gullies, tropical forests and coastal communities. Afternoon and evening hikes are also available - they each last about three hours, ranging 5-14 miles.