Just great! The hotel is very clean. We initially got a room that had not been properly cleaned, but we got another room and we never had anything to complain about after that.
The hotel is well situated, with the U-bahn right outside. Within a 10 minutes walk, you will find Kurdürstendam, Berlin Zoo, Tiergarten, KaDeWe etc.
Very kind and helpful personell and we feel we will be coming back to Sana hotel soon.
We had a great time and recommend this hotel!