Sara was a great host! She answered all our messages extremely quickly and sent us useful information before we arrived. She was there to great us in person and was very generous with her time, giving us additional tips, a map and even a phone with a local sim card in it!
She was also very flexible in regards to our checkout time, which was very nice of her. She also speaks very good French!
The apartment was very clean and quite cosy. We were a group of 6 friends but we could've easily been 8 as originally planned before some had to cancel.
In terms of location, it is not central but since transportation is relatively cheap in Lisbon we just took Ubers all the time. You can also take the tramway or the bus to get to the centre. Lastly, the area felt safe.