While not worth arriving early for, the Diamond Lounge in Brussels (BRU) is a decent premium class lounge in Terminal B (the non-Schengen area) of Brussels Airport.
Diamond Lounge Brussels Review (BRU – Terminal B – Non-Schengen)
This is no longer a Priority Pass lounge, but used as a premium cabin and status lounge for both oneworld and Star Alliance. I used this lounge upon arrival from my flight from Newark on United before heading to the Schengen area for my connection to Warsaw.
If you are not flying in a premium cabin or hold status, you can purchase access for 36EUR each in advance (for a three-hour block) or 41EUR at the door, which really is not worthwhile unless you intend to eat and drink quite a bit and/or use the shower.
It is open daily from 5:00am to 9:00pm and located upstairs, above the non-Schengen transit hall. I arrived around 8:00am and the lounge was fairly crowded, but emptied out a bit by the time I left 30 minutes later.
Credit where credit is due: the lounge had a generous selection of warm and flaky pastries available, which I resisted, but they smelled great.
The coffee was Starbucks branded and the espresso machine pretty decent. I’m not a Starbucks fan, but it beats nothing at all.
Other breakfast selections included meat and cheese slices, bread, and yogurt.
Complimentary alcohol was available including hard liquor (vodka, rum, cognac, and gin) as well as beer. Soft drinks were also available in a refrigerator near the lounge entrance.
The seating area includes several smaller alcoves that offer work space. The main lounge area includes chairs, couches, and tables. Plugs are available throughout the lounge, but bring your adapter if you are coming from outside Europe.
Restrooms and shower facilities are also available. Request a shower at the front desk. You’ll exchange your boarding pass for a key. The showers were occupied with a long waiting list during my visit, so I do not have any pictures of the facilities themselves.
There’s nothing special about this lounge, but I’m not a fan of the gate area at BRU and think this lounge offers a far better alternative. Guard your expectations going in, but you can enjoy a modest selection of food and drinks and some tranquility from the hustle and bustle one level below.