My friends and I stayed at this apartment to work remotely. The apartment was not ready when we arrived as there has been some miscommunication with the administration and the construction work done in the kitchen, so we slept at an alternative place for one night. They managed to hand over the actual apartment on the next day but unfortunately, when we arrived the apartment has not been cleaned thoroughly and there was still dirt and dust from the construction work in the 2nd bathroom and kitchen. Also, we were not informed about the construction work (water damage) in the kitchen at all (which has been ongoing in the beginning of this year) - and the view from the kitchen was less pleasant than anticipated from the pictures. Also, there was a weird smell in the kitchen. The administration organized a cleaning lady but she did not clean the areas we asked her to where the dust and dirt lied from the construction work. At the end we just tried not to put any of our stuff on anything that may have dust (as it would probably got dirty from the dust). We also found some animal fur around the apartment (which was not ideal for some of my friends, as she is strongly allergic).
Another issue we face was that the apartment was also not pre-heated prior our arrival, so it was very very cold in the first night. Also, some heaters did not work at all so one bedroom and living room were cold during our stay.
Some comments have also raised already that this apartment lies on the 4th floor and at least 80 stairs need to be overcome to get to the apartment. I would therefore not recommend elderly people or people with some disabilities to overcome these stairs.
Regarding the location: This was our first stay in Lisbon and was location-wise okay for us as we stayed for 10 days (minus 1 day as described above) in Lisbon. A relatively big supermarket (Pingo Doce Graca) is located nearby which was quite convenient. Also, Graca has some nice places to have coffee, wine bars, etc. and the highest Miradouro (da Graça) is also nearby. Alfama is also easy to reach. For someone staying only for a couple of days in Lisbon, this apartment lies rather on the outside of the inner city and I would rather recommend getting an apartment closer to the city. Because if you walk back to the apartment, be prepared to always walk upwards when going home.
The administration was very responsive to our requests, but major things had not been worked properly from the very beginning (dirt, construction in the kitchen and cold). We did not feel comfortable and were rather disappointed about our stay in this apartment.