Once you have checked equipment in the gym and are satisfied with the quality of maintenance, it is time to take a look at quality of support staff. You may not be going in for premium option where you get access to personalized trainer and personalized training routine. However, that does not mean you will not get any assistance from the training staff.
If not anything, you will be told how to stretch and warm up to ensure you do not damage your body due to over enthusiasm. In such a scenario, you should check whether the support staff are well qualified to perform their duties.
Remember, there is no point in being shy about these matters when you are paying a lot of money and when your fitness is at stake. The last thing you want is to go to gym and end up with a muscle pull or spasm that keeps you in bed for a week at a stretch. Not only will you be paying extra for the gym, you will also lose money when forced to take a holiday from work.
Rather than regretting at a later date, you should be proactive and aggressive in the beginning. You can make it very clear to the administrator that they you want answers to all your questions before you are expected to take a decision. You can offer to choose the premium service but should insist on satisfaction of all your queries before proceeding.
If the gym is a part of a national or global chain, visit the website to find out what they commit to as far as qualification of employees is concerned. Do not focus on academic qualification alone.
You should focus on experience as well. A person who has zero experience working as a gym trainer is not necessarily a bad trainer. However, you will have to be slightly more careful to ensure that you would not become a guinea pig. The trainer should be one whom you can trust. Otherwise, you and your trainer may end up working at cross purposes.