Great location - just a short 10 minute walk to the Ku'Damm. The staff was friendly and helpful. They made sure we had everything we needed after our luggage was lost/delayed by the airline.
We stayed in a 2-bedroom apartment. The room was clean and cosy. The bed was very comfortable. I had the best few nights of sleep there. The bathrooms are modern and big, with a walk-in shower in one and a deep tub in the other. The kitchen has everything you need - fridge/freezer, microwave, coffee maker, hob & oven, dishwasher, and washer/dryer combo. Loads of wardrobes and storage space. It really felt like a home away from home.
The guys working in the hotel bar were great. We accidentally spilled a full drink and it was no trouble for them to make us a new one and clean up the mess. Honestly, so polite and we all had a laugh about it.
Though we never had a chance to use them, we took a peek and the swimming pool and the fitness room were very nice! Very modern with excellent equipment.
Also, it is easy to jump on the U-Bahn just across from the hotel. We were going to a concert at the Uber Arena and it was around a 25 minute train ride directly from the hotel.
If we return to Berlin, we would happily stay at Sana again. Great value for the price. Highly recommend!