Tomas was great - exceedingly responsive, polite and a pleasure to deal with in every respect.
The flat is a great location at the edge of the old town, wonderful cafes right outside and everything within a short walk. It's a little quirky - up several flights of stairs would be challenging with a lot of luggage and it's not the quietest but very clean, comfortable and welcoming and with two full bedrooms and bathrooms is great value.
Highly recommended as a base for visits in Porto.