This place was perfect for me. The terrace is amazing; tucked right against the outer walls of the Castelo, covered by a grape arbor to give privacy and comfort. The front windows look over downtown Lisbon — the whole city is spread out in front of you. I started every day just leaning out the window and gazing at the city. The full-size refrigerator and oven were also very welcome.
Sofia checked in with me several times during my month-long stay, so I felt very well attended to.
If those are the things that appeal to you, then this would be a great choice.
Be aware, however, that I wouldn't necessarily describe the apartment as elegant or refined; it's a little rough around the edges. Some chipped paint, tile stains, not great water pressure in the shower, etc. None of that detracted from my experience. I had a great time here, and would love to come back again.