Well it's not the first salt room in Beijing actually but it's the only one open currently and I would love to try it!
There was a salt room in a Chinese gym near Club Football headquarters (gaobedian area I think) from 2010-2011 that closed down, I suppose. I took our youngest daughter there in the winters when she had chest colds and chest congestion, asthma etc and it truly helped and totally safe for little ones.