The room is in a very central location: you walk in any direction and in 3-5 minutes you arrive at some interesting place or part of town. The appartment was very clean, and all common areas were kept clean all the time. Also, the kitchen had all the amenities one may need. In general, the place is an excellent choice to spend some nice days or weeks in Lisbon.
The only issue I had was with internet: even though it worked most of the time just fine, I found that the connection breaks quite often and sometimes the speed would suddenly go down. This is only an issue for people who are planning to do work that requires a strong connection; for all others the internet is probably good enough.