This novella is actually a whole book divided to 10 parts. Each part is about 40-60 pages long. The first 5 parts are released weekly from 11th of November till 9th of December while the 5 following parts will be released around March 2014.
If you haven't read the first and second Roman Holiday installment - you shouldn't read my review of the third part... (Here is the review of the first one / second one)
Before you begin reading don't miss out the hilarious preface by Ruthie also containing a reminder to the two previous installments.