Delphine is really friendly and helps wherever she can. The flat is lovely and cozy and you feel at home immediately. Overground and tube stations are in short walking distance, and there is even a bus station almost directly in front of the door. As London will extend their nighttubes as of autumn this year, it will even be super easy to get home by train on the weekends.
Acton as such is nice, it offers everything you need and is super safe. Pub and shop wise I personally prefer Chiswick which is only a 15 min walk away, however, I guess this is a personal choice.
So basically, there is nothing bad to tell, I definitely recommend to stay here!