Although I consider this hotel a bit expensive for what it is, it is the perfect solution for a long layover. We booked a triple room, which came with 1 large bed bed and a single bed for around SGD200 for 8 hours. This was for 2 adults and 1 kid.
Our inbound flight landed at T3 around 23.30 and we caught the Skytrain over to T2 where we would depart in the morning at 10.00am. Note that there is an Ambassador hotel in both T2 and T3, but Singapore Airlines don't always specify which terminal you will land at, just which you depart from. We therefore thought it made sense to book the T2 hotel which aligned with our departure the following day.
When our flight was 45 minutes late landing, the hotel graciously extended our checkout time to align with the time period originally booked.
The room was quite large, and the beds very comfortable. As there are no windows, it's perfectly dark for sleeping at any time of the day or night. The bathroom has a large shower, is modern and comes with amenities.
A wake up service was offered, but we chose to use our own alarms. Breakfast is available but we chose to eat in the terminal. Water was included.
It is important to note (and the hotel clearly indicates this on their booking form) that you DO NOT enter Singapore, but continue to stay airside where you will find the hotel. Therefore it is important that your bags are checked through to their final destination, or that you are able to collect them landside and then do an early checkin with your onward airline, then return airside.
The hotel is right in the middle of Terminal 2, so after check out, its an easy walk to your gate, or to find something to eat.
Id definitely use the facility again if I need sleep on a layover (but there is so much else to occupy you at Changi, thatI'd rather be awake if possible!!)
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC