Alex's place was very nice! We booked this last minute and we are grateful that our booking was accepted. It was very near the central area and had all amenities we needed. Just a warning for those who do not want to go up many flights of stairs it is found on the 5th floor and there is no elevator so if you have big bags be prepared. No trouble for us though since we had small bags. It is also about 20 minutes to the airport via Uber and it was not expensive, around 7 euros. Will try to book here again if I am back in Lisbon.