We absolutely enjoyed our stay in Nunos apartment. Nuno communicated with us via WhatsApp and sent us good tips of restaurants near the place and some sightseeing spots. He was very helpful with any questions we had. Everything was more than easy.
The place is very well located. Everything is pretty much in walking distance. We went to some bars in the Bairro Alto district almost every night (we recommend Allface Hall with live music).
When we arrived at the airport we bought a daily ticket for public transfer (6,40€). This one is also good for a trip to Sintra. All tram, bus and train stations are also in good walking distances to the place so navigating in Lisbon is quite easy :)