My character is in the later levels [60+] and at this point it's a little harder for her to level up. I had the idea of finding one of the 'hardest' barrows [one that respawns] and seeing if making a skill legendary/learning a new one whilst being there would help.
I went to Forelhost to try. The place is crawling with Draugr Deathlords and Overlords and she managed to level up two levels just whilst being there.
Which other locations have lots of advanced and difficult enemies, ideally a location which respawns?
EDIT: I should mention that my character is a Redguard who mostly uses 1H + Light Armour, but Restoration and Enchantment magic are also fine. Forms of magic like Illusion and Conjuration are 'out'. The intention is not to get to immensely high levels, but ideally anything above 80.
Best Answer
There not many enemies that are more tanky than Draugr Deathlords/Overlords and Forelhost is one of the larger of the Nordic Ruins. If your goal is to level up skills, you mostly just want to face enemies with lots of health as skill advancement is based on damage dealt so sticking with Draugr is probably a good idea as they have more health than some of the other typical enemies you find in the game.
If you want to fight hard and annoying enemies, the Dawnguard DLC adds the Falmer Warmonger to most areas where Falmer can spawn. They are very tanky and hit hard.
You can try searching through the various lists of ruin types on UESP for more ideas:
You can also go Dragon Priest hunting as they're typically in medium/large burrows with large amount of Draugr.