Play a mono 1 will offer a quality quite acceptable especially when compared to its direct competitors in this price range. A play 1 single in a bedroom or bathroom will do well !!
However it is in the stereo Play 1 is the most comfortable. In my living room about twenty m² reproduction quality is very good and enjoyable. Without Sub bass are not monstrous but more than sufficient for fun, especially if you live in an apartment. Dubbed a SUB must approach perfection.
Level Design Play 1 I find very successful. I personally have only white I find most attractive and blend better into the mood of my apartment but this is purely subjective.
Noted that the SONOS system is constantly evolving and that the new redesign of the app is constantly evolving to incorporate new features.
My music is grouped on a network drive in which sound systems will directly pick up my pieces. But we must also know that it will also be possible to listen to your favorite radio programs as podcasts or access directly to Spotify, Deezer, Google Music or Amazon MP3 making your unlimited nightclub.
In short, a wireless speaker very successful either aesthetically or technically serving a SONOS Multi-Room Service absolutely great.