I don't live in Zuidholland anymore, you don't want to see the "fitness clubs" around here....I'm glas I have my rusty old weights at home...
Which province, if I may ask?
Let me guess... showroom places with parquetry floors, filled with lazy/bored people doing cardio?
There are some decent/good gyms in The Hague and Rotterdam, but for me, they're a bit too far away.