This place is a lovely studio for your stay in Porto. There is one important thing to know: across the alley is a church that begins ringing their bell at 8am It is extremely loud, and it sound almost like it's in the room.
If you're just arriving from another time zone or otherwise don't want to wake up early, this is important to know.
Everything else about this place is wonderful! Close to the river, a short (steep) hike to great cafes. Carla was very helpful and quick to respond.
Thank you Carla for having us!