I live in the Reserves on Stinson and love it. I believe it may actually be closer to the main part of campus than Traditions East.
There are some apartments within .5 miles of OU, but they’re generally older, unfurnished, and students have to deal with bills. I have a friend living at Campus Station, which is about two blocks from Campus Corner, about the same price as Traditions, but it’s unfurnished, residents have to pay for electricity and water, and the management is much worse.
If your son simply walks around the various side streets surrounding OU, he is likely to find many apartment complexes which are closer, but as far as ease of living goes, none compare to Traditions or the Reserves.