Both the apartment and location were perfect. You can hardly find a more central place in historical Porto, with everything within walking distance.
The apartment had everything we needed and looked just as nice as in the pictures. It was also very spacious and easy to live in.
If you're a light sleeper like me, you should bring earplugs though, as the windows let in a lot of street noise, which is typical of portuguese buildings.
We didnt meet with Isabel, but she was very helpful on the phone.
Overall, a huge recommendation from me.