Thanks for the update. I emailed the hotel and received a response from the Guest Relations Manager that the following Diamond benefits will be offered:

• Small plate of seasonal sweets prepared by head chef; extra sweets on request during your stay.
• Complimentary minibar in the room with still & sparkling water, coke and refreshments; Minibar will be refilled on request at no extra cost
• Complimentary Breakfast for the entire stay for the main guest + second room occupant.
• Complimentary upgrade to our preferred rooms based on availability.

Did you get the sweets and minibar with drinks and refreshments?

I thought this was very nice considering there is no executive lounge.