All MRT, BTS and Airport link are connected at some stations such as Maggasan airport link-Petchaburi MRT staion , Asok BTS station- Sukhumvit MRT station and Saladeang BTS station-Silom MRT station.
Stop at Lumpini MRT station,exit no. 2.
From there use google maps and follow the GPS.
Or follow the instruction.
1. Exit number 2 >> Walk straight and turn left into Sathorn soi1 Road.
2. At the end of Sathorn soi1,turn left and turn right at IBIS hotel corner.
3.Walk straight for 200 meters, Baan Sabai ramaIV is on your right next to the Aim hotel.