It is unknown if it will be that easy. For obvious reasons, there have been no long-term studies in partial gravity. If 0.05g stops bone loss, great. If a full 1.0g and nothing less is required, then that's going to be a really onerous design constraint.
I wonder if this unknown may, in the end, turn out to be a great reason to motivate space exploration. A full G is the norm on Earth. Micro-G in orbital stations have known long-term negative effects on health. What if fractional-G actually has beneficial effects, like say, increasing average human lifespan a lot. The human circulatory system tends to fail early, causing a disproportional amount of deaths due to strokes or heart failure. It's far-fetched speculation on my part, but is not hard to imagine operating in a fractional-G environment could decrease wear and tear here, acting as a sort of medical treatment. In the end, people would have a great motivation for leaving Earth. Just dodging death, the ultimate enemy of all living things.
If a full 1.0g is required, that also makes it a much more difficult challenge on the moon. Spinning a module of a space station in zero g is one thing... trying to get a portion of a moon lab at 0.16g to 1.0g is a different challenge.
The advantage I see on the moon is that you have local mass to use. Yoy can build a large, banked circular track underground ground and then add cars as you expand.
It depends on how much gravity is needed for how much time to stave off the long term effects of zero gravity. If we're lucky, then just sleeping at a higher G may be enough and you just need the bunks built in a centrifugal train.
