Hi, raileurope (however awkward your nickname is
)
Ok, so let's start with a few comments from our side regarding route & destinations (obviously all imho, so you can easily disregard):
a) maybe consider taking some time either from Rome (2 nights instead of 3) or Venice (1 night instead of 2) and make an additional stopover in Florence, it' one the way to Pisa and most like you will go from Pisa to Venice as well via Florence. For travelers "not staying around" with some time consuming activities, Pisa & Florence can actually be done in one day, so maybe something like late evening from Rome-night in Florence-morning to Pisa-afternoon back to Florence-rest of the day in Florence and late evening to Venice.
b) from Venice to Bled you have two travel options: easier one is to go by train to Gorizia, then walk/take town bus to Slovenian part of the town (Nova Gorica) and train from there to lake Bled area or more complicated way is to take a train from Venice to Trieste, then fabulous Opicina tram, while from there by bus to Slovenian town Sezana and train to Nova Gorica next
c) during journey from Bled to Vienna maybe think about making short stopover in Villach, you anyway will travel via Villach, so why not to stop for a few hours and enjoy nice Austrian town
d) in case of Vienna to Bratislava remember that there are two types of direct trains from Vienna to Bratislava, some trains go to Bratislava-Petrzalka station (right side of the river), while others go to the Bratislava main station (Bratislava hl.st.), which is closer to old town
e) trains from Budapest to Krakow and from Krakow to Prague stop at Auschwitz (or more correct name nowadays is Oświęcim), so you can actually save a bit of time if you get off Budapest train or board Prague train there, however remember that Budapest train is in Oswiecim 2 hours before arrival to Krakow, so it is still pretty early in the morning, while Prague train is 2 hours after departure from Krakow, so it is already rather late in the evening
We are thinking of going for the 10 days travel in 22 days youth pass at £220.
Just a small comment here as well. For most of your trips it is actually won't be a problem to get rather cheap point-to-point tickets, obviously it will limit your flexibility, but at the same time final price will be much less than £220, so if you interested we can give you an overview of what to expect for the same itinerary with point-to-point tickets