Archie
Google
The only thing letting the hostel down is that there’s a lot of construction ongoing outside of Sao Bento station, which does mean your sleep is getting interrupted if you’re in bed past 7am on a weekday, and the Time Out Market next door also had loud DJ sets every so often that went on quite late (~12am). Not the best considering you’ll need the windows open overnight during the summer, but it should say a lot that this is basically the only bad thing about the hostel.
It’s essentially in the most central place you can be in Porto, the rooms are great with high ceilings (three beds high) and plenty of storage, and they really make an effort to keep things sociable without turning it into a party hostel, with free breakfasts every day, free pasta nights every other day, and a nice bar manned by the reception staff.
I went with my partner and in hindsight it may have been better to get a private dorm here, but overall I have no real complaints. The place is absolutely ideal for a solo traveller.