Gemeinschaftsgarten has moved to Sonnwendgarten (www.sonnwendgarten.at) some hundret meters south east.
An aeral image of the new location is available at vienna city map (https://www.wien.gv.at/stadtplan/grafik.aspx?lang=de-AT&bookmark=QnOARjnw7UWqeH1DnTgeQ0FSphlRnKnmkev2pn4Mpr4C)