Vivi's place is great. It is well-appointed and has everything you could need for a quick or longer stay.
Vivi was very responsive to the couple of questions I had. Providing local restaurant suggestions and points of interest made it really easy for me to figure out how to best spend my few days in Lisbon.
Everything in the apartment was nice and as described/pictured, but the balcony is what sold it for me. The view down the street to the water was just gorgeous.
There are plenty of little shops and eateries nearby in this quiet part of the city, but more choices and points of interest are not far away. It was a great jumping off point to explore in my limited time.
I would definitely consider staying again should I ever be in Lisbon!
The only things I'd note for folks is that the roads are steep right here, and if you have heavy bags, getting them up/down a somewhat long set of stone stairs to/from the 1st floor isn't the easiest.