The OKW resort is very nice, and like a previous poster said, the rooms are very large (which is a very nice plus). But, from our experience (we stayed about there about 3-4 years back in a newly renovated building right at the entrance of the resort in a 1 bedroom villa) we found it to be nice. It was very relaxing and quiet. My personal opinion, though, is that it's somewhat out of the way from everything and it's almost too quiet. I like to go out at night sometimes and just stroll around or maybe just walking around stores so the BW is fantastic for that, but the OKW was just sort of "eh" for us. We would stay again based on the fact that rooms were very nice and the resort itself is also nice, but as far as being close to a lot and having stuff go on at night, you may want to look elsewhere.
Honestly, I think it depends on your tastes and what your family is looking for.