Maricela,
I have that St. Michel studio booked for my August trip. Of course, I don't know yet excatly how it is going to work out, but what I can say even now is that Victoria was very prompt with the communications, every time I sent her an email I got a reply within a few hours. I studied the map of Paris, and the location looks fine to me, very close to the river, Notre Dame, and Ile-de=la-Cite. I am a good walker, so I think I'll be happy with it. I, too, had trouble deciding at first, but then went ahead and made the decision, and booked. Once you book, you'll stop fretting and can concentrate on other things. Good luck.