We can really highly recommend this apartment. The location is just great. We found ourselfs in the middle of the beautiful Rua das Flores, but still it was a quiet place. From this point, you can visit all the places of interest within a short walking distance, and you will also find a lot of really good restaurants and bars near the apartment.
Isabel is a very helpful and gentle host and the communication with her was perfect. The apartment is an amazing mix between old and new. It provides everything you need for a city trip, it was very clean and stylish furnitured. The garden is a magical little oasis, which unfortunately we couldn't enjoy because of the cold weather.
If we come to Porto again, we surely will book this apartment again.