Print different from displayed image

these setting are the same that Spyder X Pro use as target for calibration.
The icc profile i downloaded from Saal (italian) website should be ok ( fuji paper matte print )

Brightness should be about 90 cdm.

My question now is : what kind of illuminant( how bright )should i use in order to check the “brightness” of print? I am not sure if maybe to me the print is much darker because i look it in a dark ( or not enough bright ) place.