I have spent many nights close-by so decided to place a cache here. Seeing as there are no mystery caches in Beirut I also decided to make it one.
Please do NOT try to access the virtual stage (where the ? is!)
To find the cache you will need to solve the following puzzle.
****************PUZZLE***********************************************************
adk mkm feb kmkm efc cjmk fef mkief bdaj mkefch iiba fecm ihk hgi mdcefk
*********************************************************************************
Note: no reference to any known language, any similarity is coincidental.
Hint updated...
Once you get to the spot, you can look at the spoiler picture to find where the cache is. You could also drive around Beirut looking for this spot but solving the puzzle may be quicker!
Good luck!
You can validate your puzzle solution with certitude.