We stayed at BWI in June 2012 and both really liked it (though DH thought it was kind of stuffy, LOL). The location is amazing. Being able to walk to Epcot is fantastic. It was a much easier walk than I had anticipated. Even walking to DHS was not too bad. Epcot is our favorite park, so being in close proximity was a plus.
Our room was big, not too far down the hall, and we had a lovely courtyard view. It was very peaceful. The pool was really fun and the waterslide was amazing!!! Being on the boardwalk was great--my kids loved the area, loved to feed the ducks, enjoyed watching the performers, etc.
The lack of QS was not too big of a deal to us. We used the pizza window a lot, and the BW bakery as well. However, we stayed CL so were able to get breakfast every morning there. if we had been just in a regular room, it might have been more irritating.
The biggest downside to the resort was the bus service to the other parks/DTD. BWI shares with BC, YC, and S/D virtually everywhere and BWI is pretty much always the last stop. Like the poster upthread said, it was pretty awful.
We probably won't stay at the BWI again, but not because we hated it or anything. We just prefer WL or AKL for lots of other reasons, so will be at one of those the next time we go back.
BWI is a really great resort.