CoS entrance in modern bathroom

[mellienel2]

No: HPFGUIDX 34953

> When the room became a bathroom, it also continued to be the room 
in 
> which the entrance could be found.  I'm certain the Salazar 
Slytherin 
> made sure when he cast the spell, that no matter how much the room 
> changed over the years, it would continue to serve that "noble" 
> purpose.  How did the snake come to be engraved on the pipe?  All 
> part of the same spell cast by Salazar.  No matter what changes the 
> room went through, something in the room would provide the key for 
> his heir.

OR - Mr. Services to the School, Tom Riddle, may have had a hand in 
there. Salazar left it for his heir to find - Tom did, and arranged 
it so that it once again became accessible.