Is the gym safe during covid?

I'm in third year at uni and really want to work out after gaining a few pounds over lockdown.

At home I was doing workouts in my back garden and stuff, as there was obviously a lot of room at home as well as a treadmill in our garage. Now I'm back at uni and living in a flat during term time, home workouts are not practical as it's harder to do in my room (e.g. due to people on floor below me).

I am considering joining Pure gym here but problem is it's in the city centre of Leicester and I am worried, because cases are rising . Would the gym be a COVID hotspot?? Any advice on whether I should join the gym or not during this pandemic and also any advice on how to keep fit whilst living in student accommodation?

Thanks!