Did anyone do mystery shopping before? and how did it feel ?

very useful to know what customer think about you !

Mystery shopping can be used as a tool to improve staff training and improve customer service.
I find mystery shopping very useful.

I did mystery shopping and I think it's very interesting (also useful).
Doing mystery shopping is like going undercover, you check everything, but the employees shouldn't be aware of this.
As someone who works in marketing, you should never forget "to be a costumer ", to think like a costumer.