edit: Disregard! It's working Fine!
Minstrel Free resting perk doesn't seem to work at House of Heroes. I haven't tested it anywhere else, but Evgeline Gnagglehuff charges 10gp each time as normal.
Character is Fiona Gildenglass on account TalesWellTold
Currently level 4, but I don't know that the level even matters, there's no indication that they do, in the perk announcement.
Have you tried resting without asking, out of interest?
WHOOPS.
No, I hadn't, and that's what I needed to do!
Thanks.