My girlfriend and I had a really good time. Sandra, the host, was very communicative and helpful before as well as during our stay. She provided us with all infos about the city and called a taxi for us to go to the airport.

The entire appartment lives up to the "Golden Ikea Standard"; no frills, simply solid and decent equipment that works and looks nice.
Since the appartment is located in the old town, the building is - of course - not newly built. Staying there in colder months, requires heating. - Make sure to tuck yourself in at night.

Next time we visit Lisbon again, we'll stay there again.