I would argue that sentences are rarely seen as a deterrent too. I would argue 3 years was toosoft and insufficient a deterrent. He assaulted officers on 4 occasions, resisted arrest, damaged a hotel room, although not charged for, he was causing nuisance alarm and distress to the women he was with and the guests next door. His actions also caused expense to the NHS for treatments and costs of pava spray x 2 and a taser discharge as well as police time and damage in hotel. He may not have even paid his hotel bill.
Down to me, that warrants a lot more than 3 years, I would go as far as to say 3 years per officer is right and bill him for the emergency services time involved of all services inc NHS, and costs of police equipment and hotel losses too. I would hit them hard so sentences were a deterrent to some. Clearly even that wouldn’t deter everyone but the harder we hit criminals, I would be shocked if crime did not reduce, especially violent crime.
I appreciate many will disagree with my outlook, but we pander far too much on the needs of the criminals and far too little to victims of crime imho.