Two days before I was to check into a Marriott Residence Inn, Silicon Valley II (owned by Island Hospitality Managment), in November of 2018 in Sunnyvale, CA, they called and said that they found a "flag" on my account and would not be honoring my reservation. I had made the reservation three weeks prior. Island Hospitality has banned me from all their properties which include all the extended stay Marriotts that I normally use in the South SF Bay area (Sunnyvale, Santa Clara, Mountain View). The GM in Sunnyvale told me that it was because I had police on one of thier properties some time ago and all I got from an e-mail from the Regional Manager was that they claim I did something at thier Residence Inn in San Mateo (a hotel I have never in my life stayed)! The regional manager won't even respond to my lengthy e-mail and request for specific information. I am a Marriott Platinum Elite Rewards member and have stayed at many Marriott locations for very long durations over the course of some 26 years. I am a very good rule-abiding guest and nothing like this has ever happenned to me. I think this is some sort of mistaken identity case but they won't even respond to me. The only time I ever called the police was in May of 2017 when a $450 watch went missing from my room. Management recommended that I file a police report which I did. The watch was never recovered. Five weeks after the missing watch, a Buddhist pendant with gold trim went missing. I never filed a report for that and the pendent was also never recovered. I also had a 4-week-long mouse infestation at this same Sunnyvale Residence Inn (Silicon Valley I) which was not resolved until after I moved out. That was the last Residence Inn I had stayed in and checked out in September of 2017. I left only because they raised the room rate above my company allowed Government Per Diem Rate. The day after I moved out, Residence Inn Sales called me an apologized, saying that the property should not have raised my room rate. I was offered a lower room rate than before if were to return but I replied that I don't travel lightly and that due to the series if unfortunate incidents at that property I was going to take a break from Marriott's for a while. 18 months later, I chose return to Marriott Residence Inn but a different location (Silicon Valley II) and that brings me back to the beginning of my bizarre but true story. I never had any problems worth noting, never had anything expensive go missing at any Residence Inn (or any hotel in general) in my life until my one 6-month stay at Silicon Valley I, 20 months ago.