Before leaving the hotel you notice something else...

Looks like the impression from another message, so you try an old trick:
Night is approaching, so you leave for home with clue #2
Transcript of the above message:
Klkbnqlcytfysryucocphgbdizzfcmjwkuchzyeswfogmmetwwossdchrzyldsbwnydednzwnefydthtddbojice
mlucdygicczhoadrzcylwadsxpilpiecskomoltejtkmqqymehpmmjxyolwpeewjckznpccpsvsxauyodhalmrioc
wpelwbcniyfxmwjcemcyrazdqlsomdbfljwnbijxpddsyoehxpceswtoxwbleecsaxcnuetzywfn