We love traveling and we are Airbnb customers ourselves. We setup this place like if we would live in it, hence the name Luso-Nordic (Paulo is from Portugal, Anne from Denmark).
Our place is 5 minutes walk from Elevador da Bica, and 7 from Mercado da Ribeira. You can easily get to historical Lisbon sites by foot or tram, or take the train to Cascais or Sintra. The apartment sits in a quiet patio, though you'll be very close from nice restaurants and bars.
We are sure you'll have a great time.