There are several options/opinions about which review to consider. My thoughts are:
Generally, I do NOT put much weight on a review from a newby (TUSCL members with five or fewer reviews).
I also look to see if a reviewer has reviewed any club I have visited and, if so, I have a better idea of what the reviewer looks for and whether his/her review is relevant to me.
I do consider the reviewer's objectives and interests. A reviewer who is looking for "eye candy" only, may rate a club highly, but the description makes it clear the club is "air dance" only so I would not be going to that club.
The number of reviews that a particular club has is also an indication of interest and traffic at that club. If a club has only three or four reviews in an area where other clubs have 100s of reviews, you can be sure the club is a dog.
Last, I would carefully check the date of the last several reviews. If a club has many reviews, but the last one was in 2014, something changed in the past years and it probably was not a good thing. If a review is over three to six months old, and you have no more recent info, something could have changed at the club that makes the review meaningless.
Hope this helps