Brilliant location for mooching around some of Lisbons best sites. Plus the famous number 28 tram runs past the end of the road!
I don't think anywhere in the centre of town would be quite, but the street isn't a thoroughfare, and no trams run down it, so you're nicely tucked away but within minutes of everything you could possibly need.
We were a group of four and the apartment was spacious, spotless and had the most comfortable beds ever!