This hotel is located right opposite the Stuttgart main train station. Just walk out the train station, look across the road to the right and there it is. The rooms in the hotel are very spacious and clean and modern looking. Have no complaints at all about the hotel. Would definitely stay there again if returning to Stuttgart.

I stayed here on business for 4 nights in mid-December. Other reviewers are right when they say the outside is not attractive, but the inside is lovely. The lobby and restaurants are nicely decorated. This is a great hotel for a conference—the hotel provides good support. The location is perfect—across the street from the main train station and around the corner from the pedestrian shopping area and the Christmas markets. The rooms were decorated in a simple Scandinavian style and were clean and well maintained. Plenty of room for suitcases, generous closet space, a well-lit desk. The bathrooms were spotless, bright, if a bit small. The only real complaint I have was with the bed. The bed was close to one wall, so that the side facing toward the room was the side everyone must have sat/slept on because it was noticeably lower than the other side. Makes one feel like they were going to slide off the bed. The comforter was warm, but did not extend over the sides, so if you are large or if there is more than one person in the bed, it probably wouldn’t cover you completely. The front desk staff was always pleasant and helpful.

Stayed for 2 nights for a Take That concert and got a rate of €125 room only (breakfast would've been a further €21 per person but we didn't partake).
Room was fine and had all you need. Bed was comfy, bathroom was nice and the TV had English channels. Bar in the lobby was inviting and the barman multilingual and friendly. Location is great -- just opposite the main station and 5 minutes from the main shopping drag on Königstrasse. The hotel may look like a concrete box from the outside but it is fine inside.

We had a most pleasant stay at the Graf Zepplin. The hotel is directly across the street from the main rail station so it took very little effort for our jet-lagged bodies and minds to reach the hotel. Our room was large, oddly-shaped, and recently remodeled. The bed and ammenities where all good. My wife had a very relaxing massage in the hotel spa which helped with her travel related stress. Stuttgart is a modern cosmopolitan cities with many foreign business travelers. Remarkably, it is difficult to find a traditional german restaurant in the central city. The Zepplin-Stube restaurant on the street level is a good choice for sampling local cuisine. The maultaschen soup (bavarian style ravioli) was especially tasty. The big treat was the amazing continental breakfast. It was clearly designed to meet the requirement of the numerous international travelers who frequent this hotel. Overall, this hotel is expensive, very comfortable, and has a great location.