Serena Williams -- Inside My Insane Paris Apt ... Booze, Shoes & Trophies (VIDEO)

Good news ... Serena Williams is finally recovered from that whole dog food mishap (R.I.P. toilet) -- and just showed off the inside of her HUUUUGE apartment in Paris -- and it's awesome.

First off, Paris is one of the most expensive cities in the world when it comes to real estate -- so when you see the size of this place, you know Serena dropped SERIOUS CASH to buy it.

You gotta see the video tour Serena gives ... showing off everything from her renovated kitchen to her bar area ... and her awesome closet -- straight out of 'The Lion, The Witch and The Wardrobe.'

FYI, Serena reportedly made $25 million last year.