The situation of the apartment is really convenient. Close to Holborn metro station, you can easily reach the main attractions by underground or bus (Covent Garden is only one stop by underground). We were 7 of us, but there were enough room for us in the apartment. My daughter enjoyed the kids room with a lot of books, toys and last but not least the piano :) The two bathrooms made the accommodation more comfortable.
Close to Ann's place we had a great dinner in The Lamb and in The White Swan.