I have used walkme for over 2 years now, it has been an invaluable tool to help me find my way around new buildings or when going into unfamiliar areas of our office building.
It is easy enough that anyone can use yet detailed enough so as to be useful. The only thing i dislike about this app is how slow at times its loading up compared with other apps like google maps which loads almost instantly! This isn't really something you should worry too much about though because if your looking for directions then surely Google Maps will do just fine? We are able to get round easily using walkme whether we're walking from place A to B within our own offices or taking clients somewhere they don't know very well.