For those who want to see a bitrate, use this console trick on Windows, run spotify.exe with the -console command option.
Add this line to Windows Run option.
"c:\Program Files (x86)\Spotify\spotify.exe" -console
"c:\Program Files\Spotify\spotify.exe" -console
PLEASE REMOVE A SPOTIFY CACHE BEFORE YOU CHECK A BITRATE!
Depending on where you have Spotify installed. Click OK.
A small console window will appear where the bitrate messages will be logged. Now just download tracks to Offline in playlist and you can see right away a bitrate.
You see then view as above.
Then just sync track(s) you like to see a bitrate as above.
Now, as above, you can see a bitrate 320 or 160 kbps.