As others have stated the location is great for exploring Porto by foot. You're also close to markets, tourist attractions and restaurants.
The place is clean and simply decorated and works very well for one person; the bathroom being small and en suite may not work for those that want their space and leisure time in the bathroom ;).
Claudia was great and communicated throughout the stay. I was delighted to stay over New Years and yes there was street noise from passers by.
Also thanks for the New Years champagne! Very sweet and thoughtful