It may seem a bit far out of Prague centre but, once you understand the buses (either direction of 131 bus takes you to an A-line metro station in 10 mins) the transport system is so good it does not matter.
Lenka provides lots of food which is a help when starting - and there is a big, easy-to-use supermarket across the road. A decent, traditional, restaurant is in the same building as the flat. There's no TV (ideal for me!).
There is plenty of life around (dogs, children and main road outside) but the (old-style!) of double glazing is effective and the flat is remarkably peaceful. Lenka leaves you alone - but if you need anything someone is always around.
I've stayed here twice now (for 4 or 5 days each time) - it's my top choice in Prague, far better than any hotel!