I really dont know which resort is better. Both are nice to go.
In winter I go to the sauna and certain swimming pools. And at home of course.
You're lucky, I'm not really a sauna person, i find it too boring just sitting there without doing anything.
The only pools we have around here for fkk are either a city pool that has fkk evening once a week, usually with mainly old pervy gay guys (makes the atmosphere not so comfortable), or spas like Europa Center which are a bit expensive to go on a regular basis.
At home I'm usually dressed (sweatpants and shirt), i enjoy outdoor/nature nudity muxh more