Goerzallee 311, next to the rails of Märkische Kleinbahn, appears to have a roof shared by Telekom (4G and maybe 2G) and Vodafone (2G/3G/4G) sites.
View of the most antennas from the south on the opposite street side.
View of the most antennas from the east on the same street side.
North-eastern sector seen from the east:
Distant view from the north-east at Goerzallee:
Distant view from south-west at Beeskowdamm: