I've stayed in the apartment with my girlfriend for 2 nights.
The apartment is perfect for a couple, in a quiet part of Lisbon. It is at 15 minutes walking from Rossio and Baixa-Chiado, in the "hipster" part of Lisbon (around Principe Real). It is 8 min walking from the metro station 'Rato'.
The apartment is very well furnished and very clean.
So I warmly recommend this apartment!