This apartment is very well located off of Avenida. I can't fault the apartment or the host. it's a great place to stay and Antonio was prompt replying to messages. Perfect for one or two people. I particularly like the books you can read through on the bookshelves.
Just one small thing to mention, if you are an older person or struggle with mobility issues. The apartment is right at the top of a very steep hill. I'd advise getting an Uber there from the airport as I took the bus to Avenida and walked up the hill with all my bags which I wouldn't advice!!
Overall great place to stay to explore Lisbon.