Stable Sonos network with no frills

Unpacked from the sophisticated packaging, put down, connected to router and stream configured in the iPad app with 2 clicks and you're done.
The signal goes smoothly for my whole floor with stone walls, I'm sure that even the floor below (thick concrete ceiling!) Still good reception there.
Very good: the status light is switched off, which is particularly important here because the boost in the bedroom is.

In short: Simple, powerful and (positively seen) unobtrusively.