The traffics is really convenient.
Go to airport and Belem and Sinatra is really easy to know.
Rossio station is near the apt, just walk for 15-20 mins or take metro 2 stop from apt.
But if you are over 175cm,u should be more careful. Because the roof is not as tall as you think.
And u need to climb the 4 stairs, do not bring too heavy luggage.
The host is really passion and nice of u have any problem they will help u.
And they also provide us viva card (use for Lisbon bus and metro), we save 0.5 to buy the card.
All is really great, hope u will like it