Had this issue recently and figured I'd post the pictures of my repair.
I had to remove the screws holding the center console in place and move it back/up 2-3 inches to get access to the area the drain hose is at via passenger footwell:
Once I had access, I was able to locate the drain hose and confirm it appeared to have a problem :
...specifically, the bottom of the hose (that drains out the lower body of car) seems to of melted:
Ordered a new hose (part number 944.572.221.00) - here's view of old hose and new one :
...and was able to get it installed with 15 minutes of my best imitation of a circus contortionist and a few choice words :
After a test drive, I was able to get a temperature reading coming out of the AC vents of 34.8F, so I'd call that a happy air conditioner! Just had AC recharged a few months ago, so it's running as well as it probably ever will. ;-)