My husband (lvl 100 druid) stealthed through to get it for me last night, he had absolutely no problems, if you can stealth, take all the time you need! if you cant stealth, but have an abundance of time and patience, there is a way to jump from the painting point on the mushroom tops. Good Luck!!
I saw a youtube of a horde character not use stealth or ever agro any townsfolk. He had to use some creative jumping up rock ledges and such to get around some of the town. He made it unscathed though.