Serena was a really love host, she gave me a great welcome, although she had to rush off to work. She left me a note with all the necessary info. Before arriving, she gave me detailed directions to her house which made it easy to find. Only downside was, that the night I was staying, the neighbours were having a party and the music was so loud that I couldn't sleep, but of course that's not Serena's fault.
The neighbourhood was good, the streets were busy so I never felt unsafe. The flat is only 3 stops by metro from the central station, so very easy to get to.