Located right in front of São Bento station and you can literally walk to the majority of the historic/sightseeing places in Porto in 20 min max.
Because of the location, there's always going to be noises - for me, if I closed the windows, it was no problem. However, the place does not offer A/C so you would need to get yourself ready for the heat during summer.
I completely forgot they use 220V instead of 110V but I was very lucky the airbnb had a wall charger.
The property management team was very responsive and accommodating.