I stayed in Feliciano’s apartment for 6 days during websummit in nov 2019.
1. Apartment is really great - good for one or two people. It is quite small but it has everything what was needed (inc hire dryer, cups, shampoo etc) and of course all the basics.
2. If you want to get authentic feel - this apartment is great - high ceilings, 3rd floor, and amazing view over the roofs from the balcony. Especially if you want to catch the sunrise
3. Location is very central and historical - worked well wrt to connections and access to good restaurants. Be ready to walk though as Chiago Is quite hilly area.
4. Feliciano has shared few good tips and suggestions for Lisbon. And also he was very quick in communications
5. I sometimes heard the neighbors from the top room as building is quite old, but was not an issue for me.
6. Again location and authenticity makes it all.
Also be aware - this is not specific to the apartment - it applies to all apartments - a regulations in Portugal for tourists- you will be asked for the passport details.