Thanks Judith! I haven't seen Nichola's other post, but now you've told me where to look ....
I've used F1s a lot, but the BIG downside is having to put on something if you need to go for a pee in the night and have to go down the communal corridor ... that and having to memorise your 6 digit door key number!! Etaps are much more comfy because the shower and loo are in the room with you.
Two VERY important things for both Etaps and F1s:-
BRING SOAP
BRING YOUR OWN SINK PLUG
Neither are supplied because they both disappear with each guest!! And the towels are TINY handkerchief-sized more often than not!!
Although both sets of properties are non-smoking, there is sometimes a residual smell depending on the age of the building. Many properties are being 'renovated' which is a very good thing. Incidentally the ladder up to the top bunk is VERY SLIPPERY so do take care if you have a child using this to get up and down - rather than crash-landing on top of you!!