The best thing about this apartment is by far the view it offers. You get a gorgeous panorama of the city and of the river. I definitely recommend it from this point of view.
However, in order to get one of the best views, one must be aware that the climb can be quite steep to the apartment building, so you can either see it as great exercise or super tiring after a long day of visiting. (although personally I would say it is totally worth it considering the view you get)
The host was communicative and helpful when we faced issues and also made the effort to give us the nicer room, for which we were really thankful.
Its location is also great for another reason- the fact that the city center is easily reachable within a walking distance. It takes around 20 minutes until Cais do Sodre station, around 15 minutes until the Time Out Market Mercado de Ribeira and around 25 minutes to Praca do Comercio. It is a really nice location if you want to party in Bairro Alto and then walk home after a fun night.
Overall I was really happy with the choice for the above-mentioned reasons.