Question, two storey (or three for that matter) small sleeping accommodation block. The lighting in the common area will be maintained, however, if its not illuminated in the day time  (enough borrowed light) is it on a timer? and if so how do you know if its works (EL test records would show that, if available, I presume.) I know non-maintained are easier to recognise by their charging light.

Maintained fittings still have the charging light on, the only difference being they are lit in non emergency conditions.