Awesome location right next to the Santa Justa Lift, few minutes walk from the Rossio station and the water. Tons of restaurants surrounding the apartment. Easy to access apartment as we received entrance codes in order to access apartment. No hassle at all! Apartment is at the top of the complex with an elevator to get you up and down. The only downside is that the mezzanine/loft bed is in a loft and if you are taller than about 5ft you will hit your head every night (if you aren't used to a loft). However, the loft bed has two windows on the roof you can open and see all the awesome views!
Also, beware of the doors because they are super difficult to open and close... we found ourselves slamming doors and getting locked inside the bathroom because we couldn't twist the doorknob open.
Overall, fantastic and cozy place in the heart of Lisbon!