Sara was kind and allowed early checking for us, but when we arrived to the flat it appeared to be a baggage drop only, as flat was not cleaned and prepared yet :( If we knew it, we could just lock baggage in the storage in city center, not to make a loop to the flat.
So just re-check with her, if you agree on early check-in that it is really check-in.
Flat was near to clean, I recommend Sara to fix shower tap.