I have problem with that location:
#How to be there?
tepid grotto
No idea how to get there (for the chest), but you can use confringo to light the brazier and accio to grab the page that spawns
visual sky
Any idea how to get there?
Go into the room on the second floor of the faculty tower
The room with the door next to the bejeweled tortoise shell. Then, once inside, use Glacius on the fireplace and you can go through
tepid grotto
👏
visual sky
You'll find a staircase that leads to the chest and the firebowl