Great location and great apartment. We stayed there for 7 days and used the kitchen also. The kitchen is well supplied with pots and pans, and Maria (host) pointed us to a nearly Pingo Doce (a grocery store), like 5-7 min walk away. The apartment is in a great location. We could see the river from the balcony and walk to the Commercial Plaza in 3 minutes. The castle, Lisbon Cathedral, San Vincte de Fora are all walking.
After reading some reviews, we were worried about noise issues (at least from the trams), but we did not get woken up or disturbed by tram sounds during our entire stay.
The appartments' wifi is good (with about 30 Mbps) download speeds.
The only addition I'd make is that the apartment was on the 5th floor, and the elevator only goes to the 4th floor. So if you are worried about low mobility issues, please note this. This is not bad, but you should know if you are concerned about low mobility.
One more thing is that the second bedroom is like an area under the stairs (like a nook), which has a couch that turns into a bed. It was a spacious and comfortable bed, but this was not a complete bedroom. Again not a bad thing but just something you want to know.
The kitchen was great. The house also has a washing machine.
Since it was December when we visited, we used the heating, and I am happy to report that the heaters worked great.