Hi guys I did some calculations on different areas for experience gained per minute of play, here's what I got: (It will differ of course depending on your character.)
I tested Iqhuan cave and because there are no places to sleep and regenerate all monsters, it was something around 4000. I will do those areas for u and get back to you on that Sarumar.
Blackwater Mountain just might be the best if you sided with Blackwater, because of the bed there. i sided with Prim and so I basically cut my blackwater Mountain leveling rate in half.
Well I've invested some skill points into quick learner, and increased my kill rate, and I've basically got my exp/minute calculation up to 14,500 exp/minute!