Rua do Benformoso is a more lively street than i thought it would be. Maybe if you need it very silent to sleep, you should close the windows. But honestly my girlfriend was so tired (she is the one who needs it silent) she didn't mind at all, and slept very very well. The rooms were super clean and bright. The only thing you should keep in mind is, that there is no elevator and bringing an heavy suitcase with 20kg into the fourth floor (there are also rooms in the third floor) can be an adventure. The bed is very comfortable.
The place is very central and you can go by feet into town and visit many things. If you like to go by subway.. The metro is very near too. Next to is a taxi-stand, where you can travel to the airport for 10-12€ within 15min approximately.
I can recommend Raiza's place and i would visit Raiza's place definitely again!