i stayed with my parents at brunos place. the place is clean, and the location is great. would definitely recommend staying at brunos place.
when we arrived he picked us up from the airport, showed us all the places we should see and took really really good care of us.
the see is near and you have the metro near, but you can also walk into the old city center.
only shortcoming: the flat is in the half-basement, so you do not have a lot of daylight...
but the hospitality and the city and the food made up for this small shortcoming :)