I believe Ana's place is one of the beast deals we could find in Porto. The building is well located, particularly if you are after the well-known Santiago and other restaurants/places to eat. There is a wonderful pastery shop just around the corner, two grocery stores (one working until 23h every day) and an underground parking 20 meters in from of the building (Poveiros) where we bought a 72h ticket for 20EUR, which was quite a good deal for Porto. The place is at the last (third) floor, no balcony, no air condition, but the temperatures were not high and we enjoyed our time in the flat. We loved the place and would gladly come back.