If you're just joining for gym and class and indoor pool, there's almost certainly equally good or better places.
I love the outdoor pool all year round, padel, pickleball and tennis. The clubroom is decent, I often work or study there when I need a break and the food and drink offering is good - it's a genuinely nice place to relax (probably because the kids soft play bit is set away from it!)
It's clean, staff are friendly, you get a towel which saves a faff (although relatively minor). The spa is good too - I'm lucky to be able to go off peak times and is actually really relaxing.
I'm probably there five days a week as a minimum, not always gymming but doing some of the above.
I wouldn't claim there's a 'better class' of people who go there, it seems pretty similar to other gyms I've been in - a fairly mixed bag.
So as a gym it isn't great value but for what I use it for, and the convenience of having it all in one place, it's great.