Our stay was perfect.
The check-in was without any problems, although we arrived bit later because of the flight delay. Miguels father was waiting for us, extremely nice, gave us piece of advice regarding sightseeing. The flat is perfectly located if you want to see and enjoy the city. Near to the flat there are pubs and restaurants and public transport.
In the flat you will find all that you need for a short stay.
We were 3, but I am sure more people could stay at this flat, as it is has 4 beds, 2 of them are double.
It is bit loud because of the location - people outside are enjoying Lisboa and inside, because the building is old, but it has not disturb us.
We were on our way.
We recommend Miguels flat.
See you again Lisboa!