The best thing about NH Hotel Heidelberg is its location. Its at walkable distance from main station & also from Bismarck Plaza & the Heidelberg Castle. You can also get buses or trams from just outside in case you dont want to walk.
The rooms are very neat & clean. The standard room has a study table,TV & mini bar. However they provide you with electric kettle with tea/coffee on request.
Room service is also good & Breakfast has very good variety.

Only thing which I found not good was the internet service, which was not free in the room. It was free in lobby though, but I would expect free internet in room, since many hotels (cheaper than NH) on the same road provide the free wifi in the room.

Overall I found NH to be a very good hotel if you want to enjoy Heidelberg.

The hotel is about a 7-minute walk to the high street and center of town and about a 5-minute walk in the other direction to the train station.

It compared to the other NH Hotel I stayed in in Cologne as it was clean and comfortable. In Cologne, though, we were able to use our computer in the lobby for free. In Heidelberg, they gave us codes that only worked for 30 minutes, and we couldn't get them to work on our computers. The codes did work on our iPod touch and U.S. iPhone, but only for 30 minutes.

I booked this hotel because I could use reward points at it from a hotel booking site (extra star rating above from me for NH's participation in it) and location was not critical for me. There are hotels that are closer to the high street and Bismarckplatz, which I would stay in if I was not using reward points and if they had free wi-fi.

Loved this hotel! Wish we could have spent more than a night!

My stay at this hotel was arranged on a very short notice to attend a conference in Mannheim and the person responsible for booking thought it´d be nicer to stay in Heidelberg. Apart from having to commute to Mannheim and back to Heidelberg I did enjoy my stay.

Check-in was a breeze. Unfortunately the front desk person "forgot" to tell me that the hotel has been built into to pre-existing buildings (one a former brewery) connected by the hotel´s lobby (a former courtyard). Well, this should not be a problem, had their not been elevators on each side of the lobby. All instruction I had received was to go "over there to the elevators" - unbeknownst to me both buildings are not connected above the lobby level and I tried to reach fifth floor twice by using the elevators which only served four floors, even though I once returned to the reception. Only after I returned the second time I was shown to another set of elevators (RIGHT NEXT to the reception!).
Apart from this liitle hickup in the beginning

The room (located on the fifth floor looking north over Heidelberg) was very light, clean, cleanly designed and I especially liked the comfy kickback chair and bed.

Unfortunately I did not get a chance to taste the breakfast buffet as I was on a very tight schedule, nor did I use the bar or attached restaurant, so I cannot on comment on that.

Internet usage / WiFi was very expensive (10 or 15 €/day, as far as I remember), but I had my own UMTS usb modem with me.

The hotel is located a 5-10 min. walk from the riverfront and the old town district as well, so it would have been suited quite well had I stayed as a tourist. Heidelberg train station is a 10 min. walk or 2 min. drive away.

To sum it all up:
- quick & friendly check in
- signage / instructions at check in could be improved
- nice, light rooms
- expensive wifi
- location close to tourist attractions