I stayed with my boyfriend in William & Antonio's place, William was very helpful on the run up to our visit, with quick responses to messages and we enjoyed our stay. Antonio greeted us when we arrived and took us for coffee at a café opposite so he could tell us about all the key things to do in and around Lisbon - he gave us lots of ideas for our trip and really helped with travel advice for day trips (we went to Cascais and Sintra during our stay). Antonio also booked us a taxi back to the airport for our return which we appreciated.
The property itself was very clean and comfortable with a well equipped kitchen. The location is convenient, within walking distance to Praça do Comércio (the main square) and also from train stations Cais do Sodré and Rossio.
It may not be ideal for lighter sleepers as the type of building it is means you can hear quite a lot from the street/the flat above, but we didn't find that disturbed us too much - the area wasn't particularly noisy.
Thanks Antonio and William :)