Everything was great:
Easy and flexible handover of keys upon our arrival. The flat is very clean, spacious, warm (we stayed in december) and quiet. A stay in spring / summer must be very nice with the private garden!
Location is also very good - short walk to a tube station (Dalston), laid-back londonian neighborhood.
Gregoire even prepared a little guide including nearby good pubs, bakerys, restaurant, public transportation, which we didn't expect but was very useful!
I can definitely recommend this flat!
Alexandre