I rented Frederico's apartment over New Year with friends. Annabella, who runs a concierge service, met us and arranged an airport transfer. The apartment is in a lovely old building and has great character. There is one heater for the whole apartment so it might be cool for some, but better than no heating which we found in several (even upmarket) bars and restaurants in Lisbon. The neighbours were having a block party and very kindly invited us, unfortunately we had no time :( Frederico was very pleasant to deal with online and I highly recommend him and his listing. The location is excellent.