Nature cabin retreat near Leeds, must be able to get there with public transport

Hi all I was wondering if you know any good cabin retreats? that's accessible via public transport from Leeds.

Somewhere where can do some hikes and explore nature and chill out. Preferably with not alot of people, because I am not very good with people.

Need to retreat away from everyday life for a couple days. Unfortunately, we don't have a car at the moment and not for a couple of months.