I am staying here quite frequently, thanks to the LM 7 stay 4 free nights promotion. Just completed two stays and I have abou three more to go this week. Please pm me if you guys are in BKK now. Tonight I am @ SGS. Yesterday I was @ ROS. ROS is a diasppointment. Very bad location (despite the river access) and very crowded hotel.
LM is nice hotel and I would give four stars out of five. SGS is definately a five star in my books.
Last LM stay, I turned down a suite upgrade for a room on the club lounge level, hoping that I could catch free Lounge WIFI signal. That didn't quite work...

Oh well. So, I will not turn down a suite upgrade from now on.
Here's my order of preference of SPG hotels in BKK
SGS>LM>WGS>ROS
Here's my order of preference of all hotels I've been in BKK
SGS>IC>Conrad>LM>Hilton>Westin>HI BKK>ROS