Planet Fitness - the Walmart of gyms.
Meh, I have trained in all types of gym, from absolute shit holes, to upscale fancy gyms.
No matter what gym I trained in, I pretty got the same pump.
I never understood the whole "gym atmosphere." Granted, I enjoyed training in the hardcore gyms in NYC, but overall, it never really made a difference in terms of progress. I guess the hardcore gyms can be motivating, but you should be able to motivate yourself to get into the gym.