Guided tours in Lisbon
Most obvious is a Tuk Tuk tour. There is tuktuks really closeby Casa Augusto Rosa: at cathedral Sé or at the most known viewpoint: Portas do Sol. It's comfortable and needs no walking but you would miss out on the tiny streets and places where tuktuks cannot go. That is especially the case in the oldest part of town where we are: Alfama.
Eco Tuk Tuk
Electric tuk tuks make less noise and throw less pollution in the air. This is highly appreciated by the locals.