I loved staying at Marios place. Its in the old part of the city, very close to transport, shops and sights. An easy walk with my suitcase from the metro station, and a short walk down to the Douro River where there is plenty to see and do. The apartment itself was pretty small, perfect size for a solo traveller for a few days and even room to roll out my yoga mat - just. Small fridge kettle and toaster to prepare simple meals and breakfast and lovely bathroom. Mario was very helpful as a host. Definitely would return here!