The room is really nice and it's close to the airport (20 min. walk) which is great. The check-in is really easy, which is also a plus if you're tired and arrive in the middle of the night. It's not that central, but it's like a 8-9 minute walk to the metro station (we always took the red line from Olivais to Alameda and the green line from Alameda to Rossio or Baixa-Chiado to get to the city center)
The communication is also great, you get very fast replies!