Firts of all many thanks for you Perdro - for your warm welcome, help and all tips !!
It was really usefull ;)
The appartment is great, modern decorated, bright, well equiped and clean. We found all we needed during our stay.
My son was delighted becouse of the playstation and few games.
It is in walking distance to most 'must see' points in the city, near to metro station, railway station, cafeterias, restaurants and tourist offices.
Even the 'specific spirit of the street' wasn't to troublesome. The residents didn't arouse trust but they wasn't obtrusive.
I would highly recommend the appartment.
Greetings to you Pedro !!
Hope we will meet again.