The place is clean and located in a very proximity of the center (Rossio).
Is a great location for young people that can walk good, not suitable for older or with limited mobility. I think is good for one or 2 nights, because if you stay longer, like I stayed for 2 weeks, the noise of the other apartments above become very noticeable, and ( specially if you have kids very embarrassing ) the noise that the bed makes above.
But will recommend for one or two nights.
Lisbon is a great City.