We really enjoyed Catherine's place. It is a bright, modern apartment in a part of the city that worked out great for us. It sits up the hill between the main area of Intendente (and a metro station) and the Miradouro da Nossa Senhora de Monte, which is a great place to watch a sunset. Stairs are involved in both directions, but hey, it's Lisbon. We also had one of our best dining experiences very nearby at Estamine' Art Food Drink.
Catherine was always very quick to respond to questions and Jose Luis was waiting for us at the apartment and helped us with our luggage and with parking our car in the very convenient parking garage under the apartment. Overall a very good experience and we would definitely stay there again.