Great location for a stay in Lisbon - the apartment is small but has everything you need and is perfectly clean and comfortable. Located in the gorgeous Mouraria / Alfama district - getting to the apartment does require some climbing either up steps from one direction or a hill from the other, not a problem but worth knowing if this might be difficult for you.
The apartment is just off a great little square where you can sit for a coffee or meal at one of a couple of cafes / restaurants, and is within easy walking distance of everything central Lisbon has to offer. Only 5 minutes from Rossio metro station.
The location means that the street outside can be noisy until 1-2am at weekends so if you're after somewhere very quiet and an early night, this might not be for you.
We had a great stay here and wouldn't hesitate to return.