I’m in Kent, the HS1 line is brilliant, 37 mins from Ashford into St Pancras stopping at Stratford en route. I don’t know why the PP slagged off Canterbury because it’s a beautiful small city with lots of culture and history. Everywhere now has closed shops so it can’t be held against it.
Folkestone is somewhere lots of people are flocking to, so expect price rises. But lots of inward investment into the Harbour/Creative Quarter have really paid off, it’s one of my favourite places to visit. Lots to do, restaurants opening, the Harbour Arm is fab. If you wanted somewhere a bit less built up then Hythe is not too far along, ten mins drive, and Sandgate (village adjoining Folkestone) is nice too.
Whitstable is lovely but millionaires row and holiday cottages dominate. Really busy during the summer and locals resent being driven out of affording local homes because it’s now so trendy.
Along the coast to Margate you have Herne Bay (tipped to be the next Whitstable, very untouched seaside town, can be a tad interesting in terms of people being a bit rough, I’ve visited a good few times and each time have witnessed someone going off on one, dunno if I’m unlucky). Birchington is nice in terms of community, Westgate on Sea is a village built to host the Edwardian rich and famous, that’s nice to.
Tenterden and the villages between it and Ashford are very nice, it’s a bit cocooned in terms of it’s pretty, and not much happens, but there’s a decent amount of shops, restaurants and pubs and it’s very safe to bring kids up in. And you can’t so much as fart without the entire town knowing about it! But there’s safety and community spirit in that!
Think you need a road trip down to sunny Kent. It’s a varied county with something to please everyone, and it has the best weather!