It is used jointly by several hotels, and there were several spaces in the underground garage that were assigned to different hotels or vacation apartments. We were assigned a fixed number by our hotel, Riva.
I've looked hard at Mapillary now, but unfortunately haven't found a good picture. But here you can see the gate: https://maps.app.goo.gl/BKzSui5HmfEQdbKB6
It is in the building of Riva Suites.