Hotel bel ami vs d'Aubusson and Hotel de Buci
 

I'm trying to choose among these hotels for a one week visit in May. All are similarly priced and all get good review. Can anyone provide information that will help me choose. I am a female traveling alone if that is relevant.

I only know the Aubusson so can't offer a comparison. I have not stayed in a single-occupancy room there so don't know about those room sizes; there is variation within the hotel on room sizes so you might want to contact each hotel and ask for measurements (square meters) of the rooms.
The Aubusson has a great location, easy metro access, very pretty decor, all essential services, and they sell the Museum Pass in the lobby. Good but pricey breakfast. The front-facing rooms get a little traffic noise on weekday mornings but it is much quieter on weekends as rue Dauphine is a relatively small street.

d'Aubusson would be my choice. I trave alone most of the time. The hotel, services and location make it a desireable spot.

I've often wondered about the street noises at the de Buci. I'm an early riser and have passed by there at 6 AM or so and the streets are filled with trucks unloading produce and things.

the Bel ami on rue St Benoit looks lovely and St Benoit is much quieter.

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Only know Bel Ami of the three you listed. Nice hotel, modern decor. Location is great for shopping, half block from Cafes Flores and Deux Magots. Easy walk to metro. Beautiful people.

I stayed in the Bel Ami in Sept 2004. Great location and the best service. I would definitely recommend it.