Since I quit playing Tibia and sold all my skillchars (many 100/100+ skills lvl 10 chars), I want to tell my 3 secret spots that I've been afking at non-stop for the past year.
In total, I think I have seen maybe 5 or 6 players on more than 50 characters, and they have been online 22h/day for months.
1) Pick hole in Folda. There is a pickhole cave under minotaurs there.
Location:
https://tibia.xyz/32003,31696,9:3
2) POH Dragon Lair Stalagmites. You need 2 players to enter to open the stalagmites (south in room where you enter tp to Demodras). Up the rope spot there, 0 people have been there for 11 months.
This is my favorite spot so far.
Location:
https://tibia.xyz/32769,32307,9:2
3) Desert Quest Druid Room. If you make the FULL desert quest (all keys) and enter the druid teleporter with the room with 2 bears. Go there with a druid, and then rope up your knight. Nobody ever go there since you need keys. And druid is the best because of the bears, so you can use them for shielding.
Location:
https://tibia.xyz/32649,32104,9:2
Goodluck to all new skillers :)