Me and my wife stayed in this hotel when we visited Warsaw in Febuary 2008, and it is really good.
It is just 10 minutes walk to the Palace, Old Town and Barbacan... and 15-20 from the Train station and Science and Culture Building (Big Stallin style building in heart of the city).
Not a bad price, and if you are staying for the weekend, it is really great value, as you get the 2nd night free.
Rooms are basic, but very clean... with 3 fresh bottles of water waiting for you every morning!
Could be a little more in terms of tv (only channels in English was BBC World and CNN... with mostly Polish channels, and 1 or 2 German and Russian) and on most the signal is rubbish.
Breckfast is wonderful... a sellection of bread,meats, cheese and salads that really fills you up for the whole day (get there early to get the good stuff though)
Couple of down points though :-( our room was to the back of teh hotel facing the courtyard of the Roosters resturant next door (Polish style Hooters resturant), and it had a motion light that got set off every two minutes, and on the Friday night there was a kind of Disco on, but not enough to not let you get to sleep).
We got the bus from the Airport to the Hotel, but the name of the stop only appears for two seconds, so we missed the stop and got lost trying to find the hotel.
All in all... Warsaw is really nice, but the type of place you can see in a day or two, but if traveling through Warsaw, I will stay in this hotel again.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC