I had the best time. I can honestly say I loved ALL of it. We had the most AMAZING weather, nonstop sunshine. It got cold overnight, with no cloud cover, so we had chilly mornings leading into increasingly warm afternoons - so much so that on Sunday afternoon, people claimed it to be 24°C in the sun! You couldn't have asked for better. The sights were varied, diverse, and plentiful. The people were friendly. The food was great, the beer was varied and lovely, and the prices remain seriously reasonable when compared to other city destinations.
Best tip? Make sure to look up - everywhere! There are gargoyles, fab facades, wrought-iron statues - all not to be missed.
It was a great trip, one of the best. It is probably unrepeatable, but that doesn't mean that I'm not going to try.
Quick Tips:
Buy a Prague card, but don't bother with the additional transport option unless you really can't stand walking. I prefer to be on foot. This card, 590 CK, not including the transport option, allows you free entry into 40 attractions. It turned out to be well worth it - we probably got double the value out of it and also visited some places we might have not bothered with otherwise if we were paying. It is available in PIS branches.
Best Way To Get Around:
On foot, though there are trams, a metro, etc. The funicular is probably the best way to get up Petrin Hill, if it's open, that is.
My hotel arranged an airport transfer, which was slightly more expensive than the going taxi rate, but it was so easy that it made it worthwhile.