Translations for congenial in French

Here are paragraphs from public domain books translated:

Holmes returned to his seat with that quiet look of inward satisfaction which meant that he had a congenial task before him.	Holmes retourna s’asseoir avec cet air de satisfaction interne qui signifiait qu’il entrevoyait une tâche agréable.
The Hound of the Baskervilles, by Arthur Conan Doyle	Le Chien des Baskerville, de Arthur Conan Doyle