What was Saki's tone towards Mr. Nuttel in lines 3-7

The tone that Saki adopts towards Framton Nuttel is somewhat ironic and gently mocking. In these opening few lines, Saki is introducing us to the story's protagonist, providing us with useful information as to his character. We find out that poor old Framton's of a somewhat nervous disposition. We also discover that he's not the most sociable of people; he's only embarking on an endless round of social visits to help with the nerve cure recommended to him by his doctor. He's clearly a rather nervous chap; he really has to put in the effort to come up with the right words to flatter his host without forgetting about her aunt, the person he's actually come to see.
The opening tone of the story helps to establish the rather tense, awkward atmosphere in which Framton's ensuing ordeal will take place. Framton's private doubts concerning the wisdom of socializing as part of his nerve cure also provide us with an example of foreshadowing. Something tells us straight away that Framton's social call at the Sappleton residence will not conduce to the health and stability of his nervous system.