3 people who got it presumably ended up in hospital for DOH to investigate. Mild cases would not have led to source being identified and traced back to property. There must be another equal ir greater number of people who got it with mild symptoms that did not get diagnosed as Legionnaires'

Most people who get symptoms need emergency hospital care. 10% of people who get it die. That's enough to keep me away from this hotel.

Also I'm under 50 but traveling with 3 people over 50. Judging by crowds in lobby (there is always a line at front desk) over half of guests are over 50.