Had a weekend stay there a couple weeks ago (as HH Dia).
The room on exec floor was perfectly fine, perhaps a bit small.
Exec lounge is closed on weekends.
Got up late for breakfast on sunday morning but was allowed to take a few breakfast items from their brunch buffet - that was a nice touch.
IIRC they stop serving breakfast at 10 am on sat and at 9 am on sunday.
$80 weekend rate + free parking + comfy bed + hilton promo = good choice ^