I love my gym.
I love the multiple levels, the friendly front desk staff, the MANY classes offered throughout every day, the hours that are perfect for me, the beautiful yoga studio and amazing instructors.
The online services and class registration is so convenient. Their website is pretty great.
Sometimes it smells and sometimes treadmills will short, but those things are just occasional.
If you really put your mind to it, you can find free or cheap parking within a block or so (and walking is good for you, you're going to the gym!) The parking doesn't really bother me and I'll bike during summer.
I do avoid going between 5 and 6pm, which I think contributes to my high opinion :)