It's an interesting part of the world blessed with the nicest climate in the UK (which is a bit like saying it's a light Rivendell). But unlike other South Coast towns with excellent rail links to London whose popularity and property values have skyrocketed, poor Hastings is served by an old, slow & unreliable rail service which eliminates all but the hardiest commuter from the area. Left over from it's heyday as THE place to see & be seen are huge Victorian piles, many of which have been broken up into small apartments and are used for social housing. Not a bad place to live on the dole, there's beaches and the weather is perfectly tolerable but obviously the downside to this is the same that can be seen in places like San Francisco or Portland.
However, surrounding Hastings & St. Leonards are some of the most exclusive retirement towns, Bexhill is one that he mentioned, 8 miles down the road and and incredibly pricey. Eastbourne is the next major town West with a similar makeup & if you head East you get to the ancient fishing port of Rye, an incredibly picturesque village with a tidal harbor & medieval homes.
So in a small geographic area you have photographer's paradise. Run down Victorian and Art Deco combine with an old town dating from the 1500s and before, Tudor pubs and mystical salt marshes, beautiful beaches and a highly photogenic local fishing industry where rusty bulldozers launch gaily painted wooden boats into the surf directly from the beach. With the hard light coming from the sea or the soft misty sprays I find new subjects every time I visit.
For cycling, all I can say is, be prepared for hills almost of San Francisco proportions in places! Even with those, it's a very popular town and seafront for 2 wheel vehicles of both the motorized and non-motorized type and is infamous for the running Mods vs. Rockers battles fought on it's beaches in the 60s!