We had a mixed feelings experience, but at the end our staying in Lisbon was absolutely amazing.
The first apartment where we stayed was located in the lovely neighbourhood Bica, in the very city centre. The apartment was nice, but unfortunately we had been waken up at 7am by workers all around the apartment.
As we complained, the hosts very kindly gave us the chance to move to another apartment close to the Mercado de Ribeira and still in the city centre.
I would suggest anyone to book an apartment from The Blue House since their staff are very kind and responsive and the apartment are recently refurbished and quite comfortable and the value for money is very good.