If it make you feel better, there are no complimentary arrival lounges for ANY airline for ANY class into Changi Airport.
" That;s unacceptable !!! "
To be constructive, you can pay to access teh arrival lounge - The Haven !
http://www.thehaven.com.sg/
SHOWERS
The shower room allows guest to freshen up after or before their flight. The shower room is equipped with a relaxing rain shower, restroom facilities, wash basin and a built-in hairdryer. Bath towel and shower amenities (shampoo, shower gel, hair conditioner) are provided. There are a total of 13 shower rooms.
Each shower is priced at S$16.48.
Rates are inclusive of 10% Service Charge and 7% GST.
Shower facility is complimentary for infant ages 2 and below.