I had a really pleasent stay at Wine Hostel the little week I spent in Porto. Such a warm and relaxing atmosphere, with superfriendly hosts. The welcomst was warm, with a taste of a good portwine. The interior matches the name, with pretty details. The hostel is located very central in the lovliest city of Porto, and is within walking distance to many facilities and must see (and taste) winecellars.
Can not do anything but recommending this hostel!
Thank you!