Always frustrating when a hotel gives a closed albeit accurate response to a question asked rather than provide a helpful open answer to assist potential guests.

The Muse doesn't have an "executive lounge" so the email is correct but this is the response I received to the query "What Platinum benefits are offer by the hotel?":

"Regarding the Platinum Member benefits, you will get complimentary upgrade the room to next category, complimentary daily breakfast, early check in and late checkout subject to availability, premium bath amenities by Shanghai Tang and complimentary free flow drinks and canapé at rooftop bar on 24th floor from 16:30-18:30 hrs."

This information is 12 months old so it could have changed so worth double checking with the hotel.

The evening drinks and canapés are served in the roof top bar which is open to the public but names are taken between 16.30 and 18:30hrs for those eligible for this offering in lieu of a full executive lounge. What is offered to Platinum members is identical to that offered to those staying in Yama rooms and above.

The breakfast is the standard hotel breakfast served in one of the restaurants but simply not charged. The hotel was offering this to Platinum members before it became a general benefit across APAC hotels.

No lounge/bar option for complimentary drinks outside the two hours in the evening but soft drinks from mini bar were complimentary for Platinum members last time I stayed.