A friend and I stayed one night at the Chiado Loft 3 and the experience was very pleasant. The apartment is extremely well located and it is exactly what you can expect from the pictures and profile description.
If you're new to Lisbon, refer to the suggestions the Chiado Lofts team left on the table concerning places to see, eat and go out as they are very helpful.

Just one thing: Due to cleaning schedule and heavy booking, there was not much flexibility concerning check out time for us and the hosts don't offer the possibility to keep your luggage for the checkout day. In case you need to keep your luggage safe so you can walk around lightly in your last day as we did, there's a locker service at the Rossio train station, not far from the apartment.
Enjoy your stay!