It's very difficult to find this sleep and fly lounge. Walked for more almost an hour inside the Airport even after taking the train to C Gates. There is no sign. It's hidden next to a bathroom and a prayer room for female. Had to ask an Airport staff at the end when exhausted searching for it. Still found it hard to locate even after the direction for an Airport staff. For a few hours of sleep, it's a good place but no washroom or shower facilities. I was told by the receptionist that I have to walk a few minutes to go to a lounge, probably Marhaba lounge and pay them for a shower. Later after leaving the sleep and fly lounge, got to know from an Airport staff that there are free showers available too. Found it at the end near Gate B14 and B19 at Terminal 3 but they don't have towels. I wasn't carrying any, so again couldn't take shower but I know now for the next time what all to expect. Before this one, I stayed in Aerotel hotel in Singapore Changi Airport Airside. They have good bathrooms with shower facility for a very little bit of higher price. I won't mind paying a little extra for that comfort and this sleep and fly lounge was missing that badly.