"Here's a thought, pop into a nearby CAA office and see if they have travel agents."
BCAA sold their travel agencies a few years ago, and AFAIK they only offer online service now. Maritime Travel took over a lot of their offices.
A few thoughts on your most recent post....
Have you booked your WestJet flights yet? As you're leaving late September, you'll have to be back by Oct. 21 as that's when their seasonal flights to London end. How are you getting from London to Sicily and then back to the mainland?
Your relatives in Sicily will probably be the best source of information on "one or two spectacular places to see in Sicily". There are lots of choices and which ones to see will likely depend on how far you want to travel. Cefalu is beautiful, Taormina is somewhat unique, you could see the Mosaics at Villa Romana del Casale near Syracuse, the Valley of the Temples or visit Ortygia - there are lots of choices. RS doesn't yet publish a guidebook on Sicily but you could check Lonely Planet or others for suggestions.
I'd suggest staying somewhere central in Florence. I'm a single traveller and I prefer small hotels listed in the RS guidebooks, so don't use AirBnB or similar services. The small hotels listed are all very reliable and sometimes offer a RS discount. I can suggest a couple of places if you're interested (depending on what "comfort level" you want). DON'T stay in Pisa. In terms of "Must Sees", again I'd recommend checking the guidebook to see what interests you. As Florence has a rich history in Renaissance art, many people like to visit the famous Uffizi and Accademia (reservations advised).
As you're travelling on a budget, it occurred to me that you could also consider staying in Hostels, at least part of the time. Those are about the cheapest beds you'll find, although you have to be wiling to put up with "communal living". Some Hostels are quite comfortable and others not as good. I find the facilities at HI Hostels are somewhat consistent from one location to another, although I've stayed at independent Hostels on occasion as well.
Florence is the capital of Tuscany, so it should be relatively easy to get from there to your Yoga retreat.
Visiting Croatia is a bit problematic, especially at that time of the year. Many of the budget airlines only offer seasonal service from Italy, which often ends about Sept. 1. You should be able to get a flight with Croatia Airlines or one of the others, but it may not be a "budget" flight. Travel by Ferry is often a long a tortuous process, as some of them travel overnight. There's no rail service to Dubrovnik, so you'd have to make the long trip from Italy to Split and then take a Bus ride. I'd have to do some research to see what options might be available for you to get to and from Croatia.
I don't believe posts are deleted, unless they contravene forum rules. However, they tend to bounce down the list as newer posts are added, so they may not be as easy to find a few weeks from now, unless they get regular replies.