A good introduction, which lasts about 2.5-3 hours, of the city. The guide, Ben in my case, is deeply in love with the city and s/he will show what a city like Valparaiso can offer to a tourist.
It made me to look to the city, which I already knew a bit, in a completely different way! Like the tours in Santiago, it is the best way to get introduced to this city. At the end of the visit the guide gives you some useful suggestions about which places are worth of a visit, where are the best places to have a drink/eat something. I definitely recommend this tour to everyone is not scared about walking up and down the hills of the city!