We stayed at Chiado Loft 2 during New Year - and were very pleased with both the location, apartment facilities and the friendly, professionel service from both Pedro and Antonio.
The apartment is not very spacious because of the roof walls - but OK for two and your have a lot of light coming from the windows, not to mention the nice view of the river and the bridge.
There's surprisingly little noise from street, tram or neighbours, even though nightlife is active in the Bica street as well.