Every time I go to Berlin, I stay in this hotel. I...

Every time I go to Berlin, I stay in this hotel. It in a prime location near the Museumsinsel (on the river spree) and Alexanderplatz. Public transportation is very near: U-Bahn, Tram (Lines M5 and M6), BUS (100, 200, TXL) and more. During my saty it was a bit crowded and the hotel was fully booked alongside some conferences and lots of tourists from around the world.
You can use the new "Radison App" to chat with the hotel, and ask for early check-in or late check out etc.
Using the App, Is a very good way to ask for things like an extra pillow, some tea, sugar, plates, more shampoo etc.. usualy they send someone within an hour, some cases less than 10 minutes (!).
The service of the staff is always the best from my experience, and most of them speaks very good English. You have many services given by the hotel, including Laundry, Sauna, Concierge, Grab and Run, Free Wifi, 60 Channels on LED HD TV, safe deposits box and many many other.
The breakfast is ecxellent! the varity is huge!
The prices are ranging from 100 Euros to 500 Euros a night and even more, you should know that there is also Berlin City Tax (about 10-15 Euros per night per room).
The main attraction is the huge aquarium as a part of "Sea Life", can bee seen when entering the hotel lobby and the galss lifts.
No wonder why I keep make reservation everytime I think it is a good value for money, but sure it isn't come cheap!