Speaking with neighbors who lived in Lisbon, they strongly suggest a Tuk Tuk tour to make the best of our time in Lisbon. These tours most often are groups of 3 or more and vary from 2 - 4 hours. My wife and I wonder if anyone would care to join us to make a group of perhaps 4 or maybe 6. It was brought to our attention to seek an electrical tuk tuk. There are a few of them we were told. They are easier to hear the driver/guide than a motorized one. Look forward to the possibilitie.