Nathalie gave us a very warm welcome to Lisbon - communication was fast and helpful, including a presentation of things to do once we arrived.
We had planned to take public transport upon arrival, but highly recommend arranging the taxi transfer they propose. We were not aware of how complicated it would be to access this apartment by foot - there was significant construction and gravel, many, many hills, stairs, more hills... then the 50 steps once you actually get inside building. We would have appreciated a heads up to understand what was involved, not having been familiar with Lisbon's hilly, cobblestoned streets. As we were a group of 4 adults + 1 baby with large bags, stroller, etc. we had a VERY hard time arriving and were consequently later than planned... Nathalie quickly arranged a taxi for our departure, and the driver was able to even carry our bags down - WORTH IT.
As for creature comforts - it would be helpful to have a few more towels. There weren't any hand towels for one of the bedrooms (so 3 hand towels, 5 bath towels for 5) and the beds were quite stiff. As we were 2 couples, only 2 of the 3 bedrooms were prepared, but it would be helpful to have all prepared in the future, as we might have divided up and slept differently.
The space itself is beautiful, bright and has everything you'd need. We were welcomed with a big beer and given lots of travel info, maps, recommendations, etc. Sound between rooms is quiet, although there is a bit of street noise (a gutter in the back during the rain was very loud, music in the front). This apartment is wonderful for groups and even babies, we were more than comfortable and really enjoyed our stay.