Arguably, yes, this Quest was extremely fun to do early on while discovering Tibia as low level Rooker, and most of players would face it, with routine packs for that mission being organized on Rook plaza everyday.
I have a few others that are valid mentions that would compete for that "Best Quest" title:
- Orc Fortress Quest: Crazy amount of mobs, specially if you went solo like me and had to figure out a strategy to not get surrounded and killed. Add that with the possibility that you can also talk to the Orc King, and well.... :]
- Desert Quest: Remember when PK was a thing reasonably profitable or even exciting on Open - PvP? The quest itself here can be pretty bland with the whole spoiler thing that we have nowadays, but what about the thrill of getting back to a town with your reward? I wish I could record what happened to me on my first Desert Quest, cos' although I got angry of losing everything forever, it was such a messy war, with a pk team going straight after us right when we exit the quest. We also probably had a betrayal during that action... We still have Youtube videos about that long gone past of carnage of levels 20, tough.
- Annihilator Quest: I never did (feels bad man), but what a classic Tibia quest! Knowing that you might have a Headshot instantly right when starting it, all in order to get the so famous rewards available is something worth to mention. Not really much RPG involved, but still a great and memorable quest right there. I can sense it as a bonafide example of Tibia's most harsh characteristic -> Unfair and punishable.