I had a wonderful time staying at Luiz place. It was immediately like coming to a friends place and right in the first night I felt home and slept perfectly. :-) Luiz is really helpful with anything that comes up and a great guy in general.
I liked the location of the appartment because it is not in a too touristy area, but still very close by public transport or taxi to anywhere I wanted to go. So all in all: higly recommended!