I stayed a week at the place and would highly recommend staying there for a trip in Lisbon. The bed is very comfortable (I’m team firm mattress), and the pressure in the shower is amazing. The mosquito nets and the quietness of the neighborhood enable the windows to be open all evening and night to keep the temperature cool inside, permitting good nights sleep without a bite or bzzz noise to be reported which is a delight. The kitchen appliances are all great quality for when you’re too tired from the day to go out again, and being able to sit while watching Netflix on the flat screen is a strong plus in that regard. The location is very nice as well, with a close by metro station and bus stop around to explore the region and the city, all while being a quiet neighborhood (except mid june for Saint Antonio celebrations in all the city).
The host was nice and answered the one question I had over the stay very quickly (although it was 10pm).
Lastly, as the other comments mentioned, being able to take the morning coffee upstairs while looking at the river view was very peaceful and nice.