Tagging along with what others have said buying where you think you would prefer to spend most of your vacations is frequent given and very wise advice. Buying something sight unseen is a risk and you are wise to inquire. But, with those things said, we are very pleased with our purchase at BCV. We've been three times now and stayed in a one bedroom and a studio and we have really enjoyed everything abou the place.
Yes, you are going to read complaints about any number of things (heat, cold, water pressure, size, etc.) Personally, I think what you may read in the form of complaints can best be summed up under that broad category of "we are all different" and thus we will see and experience things differently. I have had no problem with any of those areas.
On the plus side, if you like EPCOT you are just a short walk away and if you like MGM it's a pleasant boat ride of 15 minutes or so, so you are really pretty close to two of the parks. You're just a walk away from the Boardwalk while at the same time far enough away if you like things more quiet.
There are lots of things to commend themselves where BCV is concerned but as many others point out, each resort has it's own special charm.
I hope you have fun making your decision and that it turns out to be an excellent choice whatever you ultimately decide.