Carole and her co-host Nuno are fantastic. We arranged with Nuno to pick us up from the airport and he showed us around Lisbon before taking us to the apartment. They are also very responsive and thoughtful for how the apartment is setup. Virtually everything you need is provided for you and useful maps / instructions are in the apartment as well.
As for the apartment itself it was extremely convenient being in Alfama. Everything is walkable distance and getting an Uber or going to public transportation is very easy and cost effective. There are a number of Fado bars right downstairs and historic monuments are only a few minutes walk away. A good thing to note though is that there are stairs and walking so if you have limited mobility or are unable to carry a suitcase this might not be the apartment for you.