I adore The Beacon's layout. It's one of the classiest bars in Coeur d'Alene, and its clientele tends to bear that out. The stereotypical Beacon patron is a middle aged woman, and that's pretty accurate.
It features (nearly) floor-to-ceiling windows on two sides of the establishment, and the bar is an enclosed island in the middle of the floor. The bartenders here definitely know what they're doing, and with their very solid selection of alcohols can mix up pretty much anything you'd choose to order. The windows and open floor plan really make the bar seem spacious, even though it's average sized compared to Coeur d'Alene's other bars.
It is also very quiet compared to the other bars, and quite clean with simple decor.
The Beacon has a full menu available during the days, but I'm not certain that carries on into the night life. Under 21's are allowed during the day for meals, but there is a bouncer at the door checking IDs at night.
Drink prices are fair, but not as reasonable as some in Coeur d'Alene.
The Beacon is located right on the busiest corner in downtown Coeur d'Alene--the corner of Sherman Avenue and 4th St, almost directly across from Pita Pit.
Keep in mind, Coeur d'Alene police are out in force in the evenings, especially during the summer. Remember to drink in moderation and never drink and drive.