I understand his hotel offers a laundry service, but is it a coin operated one where guests can do their own laundry, or is it the type of service where you hand your clothes to the hotel and they launder them for you?
It is a Token operated washer and dryer. The token can be purchased at the reception counter for sin$13 per token. They do have hotel washing service if you do not want to do it yourself.
I have not seen a coin operated machine at Amara -need to check from hotel. so far have been using the collect service from the room & it has been quite good with timely deliveries.
Contact hotel and ask them
They have both services. Tokens can be purchased from the reception at SGD10 each. One for dryer and one for washer. Alternatively, you can also put it in a laundry bag provided in the wardrobe, fill up the laundry form and call for pickup. They will need to collect by 10am so, don't go after that.. And will be back by evening about 6 or 7pm.
Get an answer from Amara Singapore Hotel staff and past guests.