With the update of solph v0.6.2, we marked solph.Results as stable. As it is planned to completely replace solph.processing.results(model), I am currently replacing all references to the old module from the documentation, so that new users will learn the new feature instead of the one that is about to be replaced.
With the old nested dict structure, we had the very convenient helper solph.views.node(results, "node_label"), which extracted all information related to a particular Node. For example, you could use it to extract all flows from and to a node.