foxtons one is quite far from tube but if you are looking to get into the west end and can go by bus or overground or cycle then commute would be pretty okay.
Kitchen is tiny, really teeny tiny. It would be quite a lot of work to reorg it but you could knock the kitchen into the living room and have an open plan space instead. Bathroom right by the door is also not ideal and I can't see how you could move it upstairs - not really enough space. I wouldn't worry too much about being above a shop - that road is commercial but very quiet commercial IYKWIM. I'd be more worried about traffic noise as it is a busy thoroughfair.
I'd say the sisters ave one is the best one -excellent location, quiet street, decent size and although the bathroom is a little outdated, it's solid and you could live with it for many years if necessary. If you got stuck there with kids, then you could manage okay for a few years - the common is so close that the lack of outside space isn't a real issue.