Although we've never stayed at the Buena Vista Suites I'd like to agree with the other opinions that the HIFS is a great place.
In fact, last year we stayed the first 2 nights at the Swan and although the service is great, the location is fantastic, and it's a very beautiful hotel, we still all preferred the HIFS.
There are a few things about HIFS that don't get talked about a lot here but made our stay there even nicer. Such as a full mirrored closet in the adult bedroom, a ceiling fan, a raised bed to put suitcases under, a deep wire rack in the bathroom, and the zero depth entry pool that my daughter loved since a lot of hotel pools start at 3 feet deep and that's a little too deep for her to stand on the bottom.