Yes, you are almost spot on Aa. It is just about directly opposite where Soi Sauce joins Wattana Nuwong road - just about opposite The Ice Bar.
If my usually good memory serves me correctly, it is owned by a French man (who's name escapes me at the minute - he did start up a Anglo/French version of Udonmap a couple of years ago that ran for a couple of issues). It has been a bar & a gym/fitness centre under his stewardship & I think he turned it into a Hotel about 18 months ago.
Again, if memory is good, a friend of his was heavily pushing the place (anonymously & for free

) on the Forum about a year ago. I think then the rooms were dearer though (1,000 a night ??).
Personally I will say the same now as then.....if I wanted to stop around that area for 850 a night then The Clock is the only real option. It you want to stay for cheap & clean then The Top Mansion will take some beating at about 350 a night.