Sergio & Ruth were quick to respond to the booking and all subsequent messages, which (as a first time Airbnb'er) more than eased any hesitations & concerns. Their compact yet perfectly formed apartment is centrally located, clean and equipped with all the mod cons - I even preferred this shower over the one at the Sheraton, where I stayed the previous couple of nights. If I am ever to return to Lisbon, I'll definitely be staying at Sergio & Ruth's.