We spent almost all the time before departure in the IgA Lounge.
An extremely comfortable business lounge, spacious, lots of "air", an open layout with a view of the airport - you can safely watch the hurrying passengers. The only drawback: the business is closer to terminal A, so if you have a flight to Russia, then most likely it will be Terminal E, which means you will have to spend 20 minutes (!) to move from the hall to your gate, because the airport building is really gigantic!!
This is a huge airport, they say, the largest in Europe, you can really get lost, you didn't find the departure and arrival boards-it's not convenient, but it's beautiful, and you can go out the daily rate of steps to find a toilet or a check-in desk.