No, that's not the Roman numerals for 54. I did that number last year.
Rather, it's the solution for yesterday's Where In Ottawa location: the LIV apartments on Bell Street, at Gladstone.
This building was once known to be a shady, low-income apartment building in a dodgy part of Centretown West. But the building has been totally overhauled and now offers modern short-term accommodation (at, no doubt, higher rent).
I didn't get a chance to leave any clues because Jonathan Snook came up with the location within hours of the contest starting. Congratulation, Jonathan!
The next Where In Ottawa is Monday, December 5.