Lodge with hot tub on south coast - between Portsmouth to Dover?

[Snozzlemaid]

We're hoping to have a few days somewhere along the south coast this summer. We've stayed in Dorset a number of times so would like to visit somewhere between Portsmouth and Dover maybe?
It'll be me, dp and dd(20) so we don't want a huge family park and won't need entertainment, parks etc.
We'd ideally like a smaller, quieter holiday park with nice caravans or lodges with a hot tub.

Can anyone recommend anywhere that fits this?
I'm going round in circles looking online.

How close to the beach? I have a few recommendations but you’d need bikes or a small drive to get to the beaches. Shorefield Country Park is within walking distance of a small shingle beach but it doesn’t have any amenities.
Have you considered the Isle of Wight?

Thanks. Beach not important to us. We live in Cornwall so can do that anytime.
Would like to visit local areas, places of interest, walks, national trust sort of places.
We will have a car so won't need to rely on public transport.

And meant to say we have been to Isle of Wight many times.
We would like to explore further along the mainland for a change.

Swanborough Lakes is in a very handy location for Lewes, Brighton and Eastbourne. Lovely walks in the South Downs and some interesting ant properties and gardens nearby.

Thank you Swanborough looks great.