A really sweet and quirky apartment, with comfortable beds, fun decor, jazz CDs, great views, and a great location for exploring Mouraria, Graça and Alfama.
A little small for tall people and longer stays (note there is no washing machine, though there are two laundromats fairly close by), a few (easily solved) problems with ants, and being in the roof, it can get very hot in summer. Also be aware that getting to the flat involves a lot of steps, both inside the building and on the walk from the Metro.
Some nice local bars and restaurants - you should visit Cafe Belga, directly across the road, for hearty Belgian food and beer, and friendly staff. For local supermarkets, you need to head up the hill to Graça, a five to ten minute steep walk, past a nice park. In that area, check out the bar Mas Lingua for tasty Portuguese snacks, art exhibitions, live music, friendly conversation and cute dogs.