Spent 3 nights.
It was good stay overall with great, quiet local location, but still quite close to central Porto city. Generally clean with new interior done.
The luggage service is extremely convenient and the fee is reasonable.
I will not, however, recommend this place for those who do not like duplex type studio which means you would have to climb up a steep stair (ladder) to reach the bed. It could be little dangerous for some who are not used to it. No washing machine. Other than that, it was a great stay.