Former Convent in the Via Giuseppe Guisti
In 1780 King Charles III and his wife Queen Louise were living in Florence in the Palazzo Guadagni (now called Palazzo San Clemente). Just around the corner from their palace, in the Via del Mandorlo (now Via Giuseppe Guisti), was a convent of White Nuns (called in Italian, the Bianchette). It was to this convent that Queen Louise retired, December 9, 1780, under the protection of the Grand Duchess of Tuscany. 1 Louise remained in this convent until December 27 when she accepted the invitation of Pope Pius VI to reside in Rome.
I have not been able to identify the exact location of this convent. There was formerly in Via del Mandorlo a convent of "suore del Conservatorio della Pietà"; this building is now a technical institute. 2 The two convents may be one and the same.
1 Infanta Maria Luisa of Spain (1745-1792), wife of Grand Duke Leopold I of Tuscany (1747-1792) who became Holy Roman Emperor as Leopold II in 1790.
2 Giuseppe Conti, "Firenze Vecchia: Storia, Cronaca Aneddotica, Costumi (1799-1859)". Chapter VII. (http://victorian.fortunecity.com/duchamp/451/ficap7.html)