This is the fourth (or fifth?) time we have rented the same apartment. It's cosy and perfect if you are a big company. This is our main reason for coming back.
However, the main annoyance is the very poorly equipped kitchen. Yes, there are pots and pans etc., but the things you use most (plates, forks/knifes, glasses, cups) are a small very mixed collection, like odd leftovers you might bring to your primitive hunting cottage. And forget about having any wine glasses, not even cheap ones.
Except the strange collection (no glass is the same, different plates, different cups etc.), there is simply not enough to keep you going even one single day without having to do the dishes at least twice (thank god for the dishwasher). I did ask for more glasses, but nothing happened.
Internet is really slow and a bit unstable, so we mostly used our cell connections. Note that Switzerland is not an EU member, so you might not have free roaming there, better check before summing up a hefty bill.
If you can live with the crappy kitchen and the so-so internet the flat is just fine. And if the owners would spend just 100 franc on new basic kitchen stuff from IKEA, the flat would be perfect!