Sonia's place was perfect for us. It is an immaculate refurbished apartment in an old building in a great location. It is very close to the Yellow bus route, the bridge (and the numerous ways down to the river including by cable car which gives wonderful views.) The tourist office is a 2 minute walk away, as is the Cathedral. There is a little shop right next door selling bread, milk, wine and wonderful cheese and a good restaurant over the road where we had a taste of the local cuisine. We really enjoyed Porto and would certainly go back to Sonia's place.