John Y.
Yelp
In the heart of the business district, not far from the Central Station and 2 minutes from the Warsaw Hardrock and main shopping center, the location is tough to beat (outside of the old town area, of course)
There is stiff competition in Warsaw at this level of hotel, but this one is a safe choice, in any case, especially if a discount is secured on the internet. Do, however, pay attention to probable additional charges for breakfast and wifi, about 30 euros/night each if not included!
The view from the fitness center is unsurpassed in Warsaw, providing an overview of the city, the Palace of Culture & Science (Stalin's "present" to Warsaw -- a must see, if only one time). The fitness center itself is well-equipped, clean, and includes weigh machines, treadmills, sauna, Jacuzzi and free entrance and towels to guests.
If breakfast is included or paid for, it is a hard to beat selection, with a chef cooking eggs and omelettes to order on the spot.
As for the rooms, they are new, tidy, replete with the usual amenities of a business hotel. The hotel has 46 stories, so for good views, the higher the better. But ask to face the Palace. Staff are friendly and helpful, while maintaining professional reserve.