Well, your options are wildy but this is around the mb area of the wildy and i doubt you would want to take your training kit deep wildy. The best place really is brimhaven dungeon. Its not hard to find an empty spot and there is a place towards the back with 3 firegiants close to eachother. Thats my view, but its upto you.
The best place to melee them is in the Brimhaven Dungeon (otherwise known as the Metal Dragon Dungeon), right before you enter the metal drag section. There are at least 10-13 of them in there. Bring Guthans and you can stay forever.
I went to brimhaven dungeon yesterday with a ring of wealth and the first 3 drops were a rune scimitar, rune kiteshield, and dragon med helm... since then all i get are coins.