Hi. I missed this post earlier this week. I'll definitely start searching the web for those articles.
Because the previous owner refinished the piece with a stain/lacquer of sorts, I suppose, as you mentioned, I would have to sand the problem areas first. But since I'm new to all of this I guess I should show the piece to someone first to find out how best to address the problem. Do you know if water marks get worse with time or can I afford to wait a little to deal with the issue?
P.S. The piece was delivered yesterday. It looks great in the space. A perfect fit. Definitely glad I took a chance on this one!