If transferering to concourse Z from one of the other concourses. There is another ”hidden” pass port checkpoint one stair up. The stairs can be found by the elevators to concourse B.
If you have time to spare, don't spent it in A-Plus (Gates 50-59) but rather Concourses A, B or D which have much more to offer!
The most boring concourse I've ever seen. Especially level 2 (Gates A50-A69) there's hardly any shops or restaurants. Level 3 (Gates Z50-Z69) is just slightly better, eg offering at least a McDonald's
Outlet at Z23 on the far left wall behind the divider has a comfy table and chairs to sit at and get work done
Z 19 to small for a 747
There is a rare electrical outlet at gate z21 on the left wall and another at z20 on the right side behind a divider.
Git me home Zzz
Convenient to nowhere.
Charging point hidden on the floor next to gate Z19
Doesn't open until 6:30AM
Lufthansa lounge near gate z23.