That's what I figured -- the Hilton Lake Buena Vista was more-or-less rebuilt in the early 2000s, and while it's been lightly refreshed since, it hasn't seen a complete renovation. The OP mentioned 'Hilton Lake Buena Vista' in the thread title, but the promotional stays are typically at the Hilton Lake Buena Vista Palace, which is directly across the street (it's outright owned by the Hilton Corporation). That property was completely rebuilt just a few years ago and is much nicer than the other property.