I stayed at Helen’s place for three weeks, and I enjoyed it. Helen has a big house, and it is fairly centrally located. This was very convenient for me, as I was in L.A. for work. (Moreover, the street is not too busy, so it is possible to find parking place). The house was clean, and Helen is a great host! She is fun, and she gave me tips all the time: from how to get to her place on the day of my arrival to suggestions on where to do some shopping, what places you must visit in L.A., etc. during my stay.
I highly recommend Helen’s house!