Easy to get to (Prague's transport system being well integrated, from the city centre it's a few GBP and under an hour, with minimal walking required; while by Uber it would be barely half an hour).
Every exhibit has a full write up in both Czech and English, no need to rely on Google Translate.
Probably more aircraft than at many of the museums I have visited, and it's not just Warsaw Pact airframes. There is an extensive section on early Czech aviation - surprising just how much activity there was - which also includes French and British types. There are German aircraft from WWII, British aircraft from that era and beyond and even US aircraft. I was very surprised to stumble upon a Phantom here.
There are also exhibits regarding later periods such as the US-led mission in Afghanistan, and there are some fascinating items such as sailplaces and gyrocopters, including one used for an escape attempt from the Communist regime.
There is plenty more here than you might expect from the photos!