I highly recommend booking Ines and Antonio's place. My friends and I were only in Lisbon for a weekend so being in a central location was very important to us and the location of the Tree House was really ideal. We started most our days by going to a coffee shop nearby (there are quite a few) and then a stroll to the Time Out Market to grab a quick and delicious bite before heading to some of the touristic sites. The apartment is also located close to many good restaurants and bars.
Ines and Antonio are prompt to respond and are very thoughtful hosts. The check in process was quick and straight forward. We entered the apartment finding it exactly as shown in the pictures and found a little gift waiting for us in the kitchen. In the living room we found books, maps and journals full of suggestions for things to do in Lisbon.
Overall my friends and I had a lovely experience and I highly recommend! My only regret is that I was not stay longer.