We had a great time at Gisela's place. It's a really good size and felt like a home, with all the things we needed. Gisela was always available via text, and really accommodated us in every way.
We've visited Porto before so we decided to do something new, and I'm really pleased we chose Matosinhos. It's a quiet, residential area but it has everything you need - a short walk to the huge beach, several supermarkets and a Metro stop, plus all the great fish restaurants on Rua Heróis da França which is just a few minutes away. Gisela recommended Salto o Muro and Tito II to us and we ate at both - Salto o Muro was the winner for me, but not by much. If you want to cook in the flat (the kitchen is spacious and well equipped), I recommend shopping at the beautiful Mercado Municipal de Matosinhos for all ingredients including amazingly fresh fish.
The sea-fed swimming pools at Leça de Palmeira were unfortunately closed when we were here, but they're about a half hour's walk away and really stunning. If you feel energetic, there is a boardwalk that goes from the beach at Matosinhos all the way to Foz and then into the centre of Porto. The whole journey took us about an hour and a half on foot, but there are bars, restaurants and cafes along the way and we loved being by the sea. If you hire bikes you could cycle it quite quickly.
This was a lovely short break for us, but I could imagine staying for far longer. The apartment was good for us as a couple, but it's big enough to accommodate a baby/toddler too, or an additional couple. It helps that the kitchen diner is separate from the living room.
Thanks for having us, Gisela!