In The Best Offer's denouement, as Oldman (Rush) begins to understand exactly what has happened, there is a series of events involving him going to a restaurant in Prague, moving into a new room furnished to his specifications, finding a tracker in the boot of his car, and eventually him in an asylum. What is the exact sequence of these events? What is their significance?
This is my interpretation:
Remember this quotation:
In other words, in everything fake there is something real.
Now, remember Claire's words that Rush replayed in his mind during the ending scenes:
At the end of the film, Rush moves into the room furnished to his specifications, overlooking the square. This was the only place Claire mentioned as ever feeling safe and comfortable.
By taking the apartment and going to the restaurant, he is showing hope that she will one day return - which is why he tells the waiter he is waiting for someone.
He is hoping she is the glimmer of truth in the massive forgery. He has lost everything and is a broken man - but he is clinging to hope that that one part of his life could be real.
However, there is another interesting issue to be discussed. Do the asylum scenes take place before or after the restaurant scene?
There is no correct answer to this. Perhaps he was in the asylum and reflected on the events, as the movie showed, during his time there and found some glimmer of hope and waited in the restaurant. Or perhaps he waited in the restaurant, became more and more broken and ended up in the asylum.
All in all, it's up to the viewer.