My wife and I visited Porto for a quick two days during which we knew we would be out and about for most of the time. The apartment is convenient to just about the whole city, within a block of the Candelabro bar and other good bars/restaurants. It one level above a fairly busy street that leads to/from the bar district. Being late-night people ourselves, it didn't bother us, but could be something to consider if you'd prefer a quiet hideaway. The host was amazing and friendly, and offered tons of local suggestions for food and things to do and see. Check-in/out was very easy.