I had a great stay in the large and bright double bed room, the palace is beautiful and the apartment perfectly equipped, with a complete modern kitchen, a nice common living room, perfect wi fi coverage and multiple bathrooms in perfect conditions.
The neighborhood is quiet and the area is central but not crowded, 3 minutes walking from the first metro station or 15 by a beautiful walk through the Parque Eduardo VII down to plaza Pombal, and very near to the Gulbenkian Fundation (a must see: park and museums): for my way to visit a city was the best position and comfort.
I very warmly suggest this solution for a stay in the city, enjoy Lisboa!