Spirit Health Club Voucher

Hi everyone,
I recently purchased a voucher from lastminute when they were doing a 'when its gone its gone' promotion, so it was £20 for 2 people to go to any of the Spirit Health Clubs and with a spa treatment included.

I just wondered if anyone can recommend any of the Spirit Health
Clubs....there isn't really one nearby to me so we can basically pick any of them and have a night away somewhere, but i've no idea which one to pick. I'm asking for recommendatoins because someone told me to avoid the Birmingham one, so i wanted to check what else to avoid before booking a hotel etc, and so of course i can get full value from our voucher! (we were hoping for nice pool, jacuzzi, steam room, spa stuff etc)

Thanks in advance.