Why do people call Mr Neave's family an ideal family?

Mr. Neave never begrudged his wife and daughters their accessories, knowing they were all put to good use, as the girls were very popular and Charlotte a remarkable wife and mother. Mr. Neave’s house was frequently the site of large parties and he was often complemented on his “ideal family,” especially the girls who were very beautiful and sought after but had chosen to stay at home rather than be married. It was a strange arrangement but one that suited Charlotte and the girls nicely.