It’s likely a reference to Gianni Versace’s villa at Lago di Como (Lake Como), and I think David Madson’s murder will occur in that episode since he was killed next to a lake.
I believe that Miglin’s murder is actually in episode 3, but for some reason I couldn’t find anything on the blog or IMDB confirming that (Mike Farrell’s IMDB profile only has him listed as 2.01 as a placeholder). We do know William Reese’s murder is in episode 3 though, and since the show is going in reverse it makes sense that Miglin’s murder would take place in 3 or 4.