I too would highly recommend a day on the Isle of Wight, anyone that I've taken there has always come home feeling like they've been 'abroad' for the day with thee very short sea crossing, and there are some stunning views to be had by doing a lap of the island.
Bembridge is approx a 30 minute walk from the beach, although you can get a taxi, and Sandown has a bus stop right outside which will take you in to the centre of town in 10 minutes or so.
A couple of photos from several trips that I've made:
The Needles from 500ft.
Close up of the Needles.
The West coast of the island.
Short final for Sandown.
Bembridge from above.
