We really recommend staying in Thiago's Camões House in Porto. It's beautiful, cosy and clean, with lovely decor and brand-new appliances - not to mention a really great shower! A mini house with two floors, we loved the quirky upstairs bedroom area where we could relax after a long day's sightseeing - the bed is really comfortable and there is loads of space for storing clothes. Thiago and his colleague are so friendly and helpful, checking in and out was a breeze and I felt they really cared about our experience as guests.
We really recommend shopping for breakfast/lunch things at a local shop just round the corner (left out of the house, turn first left) on Rua de Paraíso, where an elderly Portuguese couple sell fresh eggs and bread stored in big wicker baskets, deli cheese and meats as well as fruit and veg - they are lovely people and sell delicious products. We also had a coffee and custard tart across the road at Cafe Africana every morning, whose barman is so friendly and kind (and also speaks great English if you're having trouble!).