My favourite place so far has been in the Swamp of No Hope. There are
rarely any more than 10 people there, and they're mostly Iksars.

There are three entrances to the Swamp from Firiona Vie - one to the left of
the zone and two very close together on the right. I go in at the right;
either entrance as they both lead to the same spot. If you come across the
head of a large Iksar statue, you're at the wrong spot and should head West.

Not far from the zone, there's a spot near the Southwest edge of the Froglok
village where three frogs spawn - usually Gaz Warriors, occasionally a
Shaman. You'll also come across large Bloodvein mosquitos, Man Eating
Plants and Giant Leeches in that area.

Careful use of Lament will pick off unwanted frogs. You'll have the place to
yourself. Be very, very careful if you want to explore the Froglok village -
they move fast when they aggro (*rubs bruises*)