I know this all comes down to preference but I keep going around in circles. It would be a solo trip so not tied to any school holidays. I really want to see Vienna and see all the beautiful architecture (so May would be better) but I also really want to see Salzburg and maybe Innsbruck (so July). Summer I guess would be better weather (perhaps too hot for Vienna?) but I've read it can be quite rainy in July. Would love to hear other people's experience of travelling in these months!