I stayed in the City Lodge on Sukhumvit Soi 9. It has a great location - almost too good as from my bedroom window I could have almost stepped across into the ticket hall of Nana skytrain station. Because of this, for privacy, I kept the curtains of the room closed all the time. Unfortunately all the rooms facing away from Sukhumvit were taken. The room itself was ok but on the small side and thanks to effective double glazing, not too noisy. Breakfast is taken in the Pasta and Noodles restaurant and was ok but nothing special and the choice was somewhat restricted..
If possible try to get a room on the side away from Sukhumvit