Sara's place was very convenient and near a lot of small restaurants and bakeries. She gave us a good overview of the place around and additionally had proper folders os information and maps to help you navigate Porto and surrounding area. Sara and Hugo were always there for us on WhatsApp and phone whenever we had questions. They also arranged for a transfer to the Airport early morning for our return. They both are very professional and hospitable.
The place is sufficient for 4 people and we were able to manage with big 4 pieces of suitcase luggage but it is tight. The metro is a bit far but you can just walk to many attractions since Porto is basically a walking city (its gorgeous). If you are 4 in a family I recommend to have quick baths since the hot water runs out. This is something the hosts promptly wanted to look at and help but we asked them not to worry about since we managed by staggering out showers, 2 in the AM and 2 at PM. The bedroom on the road side gets noise till late night so light sleepers can do with ear plugs.
I would definitely recommend this place to others whether you are a couple or a family.