Our stay in Porto was lovely. The flat is clean and stylish, you'll find there everything you need for a one week stay (or even longer). Even though we didn't spend much time there throughout the day, it felt very comfortable and it was situated very close from all of the sights and good restaurants in the centre - usually it took us 5-10 mins to walk anywhere. However, if you wish to spend more time in the flat during the day, you might hear some noise from the nearby construction site (which in the summer time are apparently all over the city). At night you might be woken up by the seagulls screaming, but if you close the windows for the night it should be completely fine even for the light sleepers (there are also ear plugs available). It was also very convenient to order a private transfer to the airport, as we were leaving very early in the morning (the price was pretty much the same if not cheaper than the regular taxi). Would definitely recommend for any travellers who want explore the historic centre of the city.