Good gyms in Kreis 7 Zurich (near Romerhof or Kreuzplatz)

Sports and Hobbies
1
Friends

We (I & my wife) are looking for nice gyms around Romerhof or Kreuzplatz in Kreis 7. First, are there some places where I can get partner deals (for 2)?

Ideally, if the place has a pool, fitness area and wellness (steam/sauna), would be ideal. What kind of membership prices would I look for such a gym?

If pool is very expensive, then we can do with fitness+wellness. Also, can you share (if you know) the membership prices too?

Thanks and look forward to the insights.

2
Near Kreuzplatz there's

Diamonds Private Gym

Looks pretty exclusive, I doubt they'd let me in there to find out the price

No swimming pools that I know of - try City, Holmes Place, or I think there's another thread on here somewhere about gyms in Zurich.