Find another hotel? Any ground floor rooms or alternate staircases?
A dimmer can be mutar lechtichala on shabbos, depends on the type of bulb (intensifying an electric current is not a problem, only if it intensifies a flame or closes additional circuits).Either way if you don't need the light to get down the stairs it is פסיק רישא דלא ניחא ליה, which according to R Shlomo Zalman that electricity is derbanen is not a problem. The only problem is according to the chazon ish that electricity is deoriasa. AFAIK most people are not machmir.
if it enhances (ie: makes it easier to to go down) it may be nicha lei
close your mouth
FTFY
Does anyone have any tricks to use a staircase in a hotel that has censors for the lights when you walk in?
Frog dissection alert. Euclid was talking about censors.
anyway to cover the sensor before shabbos?