The view - as you'd see from the photos - is one of the best in Alfama. The apartment is spacious and you can easily catch trams from the front, including the famed 28E tram. Major attractions like the Cathedral, Fort, etc. are walkable. All together, it is a great base to explore old town Alfama.
The hosts are very kind, with clear and prompt communication.
Some things to be aware about: this is a loft apartment and hence relatively small windows, is in a historical building and hence you've to climb quite a bit of narrow stairs, there is no balcony