Quick answer: Munich Airport's lounges are grouped under Airport Lounge World, located mainly in Terminal 2, with day passes available from €72 per person.
What's included
Free Wi-Fi
Hot and cold buffets
Relaxation areas and workstations
Showers in some lounges
Tickets and vouchers can be booked online in advance — useful if you have a long layover or just want a quieter space before a long-haul flight.