Kinda like colonizing Mars, it sounds good in a general, gee whiz, kind of way, but offers few benefits.
In contrast, an actual Moon base situated on the satellite's surface would be quite useful scientifically speaking, especially if your ultimate goal is a base on Mars.
That is where the science is, that is where the shielding material is, and that is where the resources to make propellant and other useful things are to be found. The best place to build it would be at one of the poles, because there are spots at both of the Moon’s poles where sunlight is accessible all the time, as well as permanently shadowed craters where water ice has accumulated. Such ice could be electrolyzed to make hydrogen-oxygen rocket propellant, to fuel both Earth-return vehicles as well as ballistic hoppers that would provide the base’s crew with exploratory access to most of the rest of the Moon. Other places on the Moon might also work as the base’s location, because while there is no water in nonpolar latitudes, there is iron oxide. This can be reduced to produce iron and oxygen, with the latter composing 75 percent or more of the most advantageous propellant combinations. In contrast, there is nothing at all in lunar orbit: nothing to use, nothing to explore, nothing to do. It is true that one could teleoperate rovers on the lunar surface from orbit, but the argument that it is worth the expense of such a station in order to eliminate the two-second time delay involved in directly controlling them from Earth is patently absurd.
Putting scarce dollars to work intelligently is the goal. Logic, sober thought and honest consideration of all alternatives are the methods to make that happen.