Amazing location in Lisbon! It's close to all of the big sites, plenty of bars and restaurants, and several big transit lines as well. The street it's on is very quiet, so while we were very close to everything, it wasn't too noisy. We really liked hanging out on the balcony as well, and admiring the great view.
The location and view made this a perfect place for us to stay. I would definitely recommend it.
The building has all of the same quirks as other older urban apartments in Europe (steep narrow stairs, etc), but nothing too crazy. It's hard to see in the pictures, but there is a kitchen space with a small fridge, sink, and electric stove top.