When taking the MRT from Changi Airport to the city, do I need to transfer at EW4 station?

Yes. From Changi Airport MRT Station CG2 to Tanah Merah MRT Station EW4, everyone here has to get off, otherwise they will return to the airport! When you arrive at Tanah Merah MRT Station EW4, the MRT will stop at the middle platform, with one side going to Joo Koon and the other side going to Pasir Ris MRT Station. You only need to walk to Platform B in the direction of "Go to Joo Koon" (just a few steps away), take the MRT to Lavender Station, get off at EW11, exit B, and walk past the food court and snack bar on the right Just around the corner is the lobby of Lavender V Hotel. Adult subway fare Standard (if purchased at an automatic ticket office) SGD2.00/Ezlink SGD1.51, child SGD0.58