I spent two nights in Porto and enjoyed it.  Here's the view from my room... The long roofs below are port houses where it's aged.  I tried several... Besides having a washing machine in my room (easy clean clothes!), my favorites were the incredible tile work and the sunset watching party just above my room. Yes it's heavily touristed. Porto is a popular starting point for a Camino de Santiago and I decided to follow the Central route to see what it's like.  I passed about 100 walkers by lunchtime over 35km to give an idea of how many are walking. The Camino uses old Roman and medieval routes that had bridges. Many km of cobblestone riding is tough on the wrists. Spring views and primo weather compensate though.  I ended up today at the border with Spain in Valenca so it'll be goodbye to Portugal in the morning.  First we (with Camino walkers) relaxed and had a nice dinner.