The Freifunk-WiFI-Hotspot has proven itself as quite reliable in our house since summer 2015. It offers free WiFi-Internet via the Freifunk-network. The availability of this non-commercial service can not be guaranteed. But this hotspot has also the advantage that no login is necessary.
As before, you may also buy tickets for the well-tried Hotsplots Internet-access, which offers a big bandwidth.