I stayed at the NH Hotel in Raunheim for business in mid-October and found it pretty average. The conference facilities were adequate and suited the needs of our meeting. The rooms were basic but clean. I felt that the food let the hotel down. I was there for two nights and the breakfast and dinner was buffet style, with little or no variation day to day. For a hotel frequented by people attending business meetings and holiday travellers I would have liked internet to have been free, but it cost 10 Euros for 24 hours. There's also not much in Rauenheim so I'd really only recommend staying there if you're using the conference facilities or because it's near Frankfurt airport.

Grounded in Frankfurt because Hurricane Irene canceled our flight to the US, we took the airline's referral to this hotel. Total cost was $77 a night, which I consider a bargain. Free bus from airport (make sure you take the right one--there are 4). Free WiFi in lobby for 1/2 hour a day. Breakfast expensive, but Raunheim is only a 10-minute walk and has several places to eat. Room was clean, service was as expected. If you have time on your hands, you can walk to Raunheim's train station for direct trains to Frankfurt.

NH Hotel, Raunheim is a good hotel from a purely stay purpose. However, when it comes to other aspects like nearby surroundings, value-adds etc, I feel this hotel is a BIG NO. First while the per night rates are normal (usually averages around 80 Euros), they charge additional and substantially for breakfast and internet (around 20 Euros / day). This I feel is quite a lot.

Also the hotel is around 20 mins drive from the airport. The shuttle though claims to be a 30 mins frequency but I had to wait for at least 50 mins before the shuttle arrived. The shuttle offered only 8 people space and hence lot of people who were waiting for more than 30 mins had to either wait for next round or take a cab.

The area Raunheim is almost dead in the night with hardly anyone visible on the road. The area has continuous sound of airplanes flying throughout the night.

There are two restaurants nearby one of them being Country Steakhouse which is believed to be good. I stayed there for just 1 night because my regular hotel in the city was full for that night. Hence I can only suggest this hotel if you exhaust other options near the city.
Forgot to mention the hotel has a nice swimming pool and fitness center but for a night stay, I could hardly use any of these facilities.

I stayed here for two nights while visiting the motor show nearby. The hotel i found clean and comfortable, even the fact that 2 coach loads of spanish people didn't affect my stay. The food at the bar was average for the price and the drinks were expensive but typical of hotel bars.

The breakfast though is VERY VERY overpriced for what you get.... not very satisfying for 19 euros each time.....

The bar staff working the evenings of the 16th and 17th were very friendly and had great customer service skills so pass along my thanks, they make a tasty cocktail!

Oh and i didnt experience the shuttle bus but had a hire car and found it no problem getting parked.