Hi Csaba, yes I made that comment, and as I said the emphasis is on "house", what ever that may be. In the case of the photo to which I made a comment all of the tower and the surrounding building could have been in the shot, but too much of the sea or the countryside will go at the expense of the clarity of the subject itself.
Your remark about the Faro Niebla which clearly is part of a larger building is useful, because that shows a way to define the limits of what we want to see. Personally I would say that the fort could be in the shot, perhaps not in its entirety but still parts of it could be useful.
(PS: Have your issues been addressed that you posted earlier about portrait shots?)
Warning!!! Pedantic post follows
The 'house' in lighthouse refers to the house that the light lives in, same as a henhouse is a house where hens live.
About the only lighthouses that have accomodation for lighthouse keepers within the tower or as an integral part of the tower are ones on isolated rocks and similar. Taking the Deal Island light that I posted, while a very isolated light the three keepers lived in cottages out of sight to the right of the tower.
Faro Niebla is a free standing light with no attached buildings, it is however in the grounds of the old fort.