Wonderful performances and great music! I understand this is a fictional account, but I do not believe accuracy is particularly relevant in such an old case, specially when the names involved have already passed away.
Focusing on the connection between the characters was a great choice over telling a sensational murder tale, it made the Beat Generation look like a debauched version of The Dead Poets Society, and I loved it. The one flaw is that the story starts a bit slow. I found myself almost uninterested during the first half hour, but once relationships are stablished, they become quickly intense and complicated, and the characters develop into these tortured souls, so easy to empathize with, under this charismatic libertine façade, and it just makes you curious and more curious about how things will turn out even though you know exactly what dark event looms ahead.
The main cast was great, and this will probably remain as my favorite DeHaan performance even with his many recent projects (excellent example of well-deserved attention!). I was particularly impressed with Radcliffe, who totally made me believe he was born and raised in America, and gave life to Ginsberg in a way that made him look detestable and selfish and yet feel so relatable. Another excellent work under his belt.