We just stayed in the NH hotel for 3 nights, we really enjoyed our stay.
We have paid for the upgrade to the executive room, which is a good deal, because the rooms there are completely renovated there and the executive building, which is connected by lovely cable car, is located in the park, which is absolutely quite. We were happy to see tea/coffee maker, a mini fridge, and a bathtub, in a spacious room.
The breakfast in the mornings was amazing-they had everything you could want and the staff were friendly.
The room was very clean and this was upkept daily without fail.
All the receptionists we encountered also spoke really good English and were genuinely helpful throughout our trip. You are able to purchase the tram tickets or the tours at the concierge, there is also stop of hop on bus directly in front of the hotel, which was great.
Internet is available in all the hotel areas including rooms, which is very helpful.
The location is good as well, it is just 3 minutes walking from the nearest shopping mall, Novy smichov which is also where the Andel metro line and the trams are located. Tram number 9 takes you all the way to the heart of downtown from opposite of Novy smichov,
Overall, this hotel met the high standards set by prior Tripadvisor reviews and I won't hesistate to recommend them. Should I return to Prague, I have no doubts that I'll return to the NH hotel.