We have a fabulous stay at this apartment. The location was perfect, it was quiet enough at night to get a good night sleep important for those middle aged travellers like us. We too had trouble with the key but patience seemed to help us. We learnt that on s Sunday in Berlin we couldn't locate any supermarkets open so best to purchase provisions avoiding Sunday's. The bakery below the flat was lovely and we had our first taste of Black Forest gateau which was very delicious. The only thing I would have loved is an ice tray for the flat and some big mugs.
We also loved the Apple TV which was a great addition. We didn't meet Roi but he was very attentive with his text messages and we appreciated that. This really is luxury Airbnb thank you.