We stayed at Rodrigo's apartment for 8 nights and everything was wonderful: we had pretty much everything we could imagine for a convenient and enjoyable stay.
He was very nice and hospitable when he welcomed us on our first day and was ready to give us a hand.
The location of the apartment isn't very central, though nice as there's a big supermarket nearby and the famous 25 April bridge with the promenade along the Tejo river, as well as the Belem disctrict that is definitely worth visiting.
It was easy to catch a tram and buses in order to take a 10-15 minutes ride to the centre of Lisbon or a train (the train stop is 10-15 minutes away by feet) to Cascais, from where you can easily get to Cabo da Roca.
We absolutely loved the design and the condition of the apartment and would advise everybody to choose it as an accommodation in Lisbon.