Great location! this apartment is located conveniently between the city centre and Belem. So it is a great choice for exploring the city. There are a lot of nice cafes in the area and two supermarkets within 5 min walk. There will be a lot of going up and down the hills, so I would recommend to pack comfy shoes.
You will find most of the appliances in the apt. There is a Nespresso machine - but you will need to bring your capsules, or buy at the local supermarket. And bring your detergent for the washing machine, if you plan to use it.
We were able to work from home - so internet was ok (however only in the living room and first two rooms, it was weaker in the third one). There is a big table in the common area - so it makes a good place for coworking.
Also the walls are very thin - so everything is very audible in the apartment - just good to bear in mind if you are planning your stay as couples or with kids :) enjoy!