Helena is a fantastic host - from the point I sent my first inquiry to the day we left, she was responsive, communicative and super helpful.
The apartment is a wonderful space in a great location just outside of the super touristy neighbourhoods but within walking distance to many of the key attractions in Lisbon.
In advance of our arrival, Helena sent across a comprehensive list of suggestions and ideas, she was there to greet us when we arrived, stayed in touch throughout our stay and took care of arranging a taxi back to the airport for us on departure day. She seems to truly enjoy helping people enjoy their time in Portugal and offered to provide hints and suggestions should we ever come back to Portugal to visit different places. :)