We are planning a trip for next April to Europe using three weeks of timeshare. Thinking about Paris for a week (have a nephew living there), then Germany or Switzerland, then Italy, probably near Florence. Should we fly into London to get the best fares, then take the train over to Paris? Should we fly to London from Rome? Can we rent a car in Paris and return it in Rome?
Europe in April can be lovely, though make sure you bring along a good rain jacket and umbrella just in case! Your ideas of where to go sound good and easily do-able in the time frame. Flying to London can often be the best idea in terms of prices. I addition, you can get very cheap flights out of London to the rest of Europe - check out www.ryanair.co.uk or www.easyjet.co.uk and there are more if you need them. This can be a cheaper way for you to get to Paris than going by Eurostar (the train). If you do go on Eurostar, make sure you book well in advance as that way you get cheaper tickets. Flights to Rome or anywhere else in Italy (particularly the north) are very easy to get from London. However, you can of course rent a car, but this might work out quite pricey. Easiest thing to do is check a few car rental websites and see what they say (e.g. hertz, avis, etc). They will charge a supplement for you leaing the car in a different place to where you take it from and this can sometimes be difficult to see on the online version. If you do hire a car, it is probably best to wait until you reach where you want to go from and strike a bargain with the car rental company there.
Hope this helps a bit,