What is the best time to clean guest corridor?

its not the same in all hotels and no fixed rule for that, but we don't make it during night time and we try to do it in time with less traffic

Late morning when guests are usually up and either gone about their business or checked out, this ensures minimum inconvenience for the guests and clean corridors ready for those about to check in. It might be prudent to then do a "quick" and "quiet" tidy up in the early evening when most of the guests are having dinner or have gone out.

I would say during breakfast time.