I went to Madeira for 3 days and took this guide and I'm glad I did it. It focus more on Funchal but with so litle time its ideal to plane the days and not waste one second of time.
It also makes a great quick reference to the hit points like top 10 local dishes, top 10 gardens, top 10 beaches, top 10 warnings etc.
It has great info about all the best places and I found the bus information the most usefull for people like me, who wanted to save money but enjoy the trip at the same time. It has lots of pictures of what to expect, usefull information about the island, info on prices, small maps and the best locations and monuments: the very best top 10 of places you just have to visit while in Madeira, places like The Catedral of funchal, Museu de Arte sacra, Adegas, Jardim Botânico, Mercado dos Lavradores, Monte, Curral das Freiras, Pico do Areeiro and many more.