This hotel is located just across the street from the parking structure for the main Nantes train station. (There is no noise from the trains themselves, which leave the station several blocks away.) It is just a couple blocks from the Jardin des Plantes (a very nice botanical gardens) and several blocks in the other direction from the enormous chateau. Most of the restaurants are in the old city, about a 15-or-20 minute walk (beyond the chateau). The convention center is about a 10-minute walk across a bridge. A tram stop is a couple of blocks away.
Our room was very nice. It was large, with Monet water lily prints on the walls, a mini-bar, a pants-press, an extra bed/couch, and an especially large, modern bathroom, with excellent shower/tub. The large breakfast room has a wonderful feature: one of those machines where oranges are put in the top and, upon pressing a lever, the oranges drop down, are cut open, and juiced, so that immediately fresh orange juice pours into your glass. There was a good selection of food, including bacon and scrambled eggs.
The front office staff were helpful. They arranged for us to have a very early breakfast so we could catch our 6 a.m. TGV. There is a large sitting room and a small bar near the lobby. There is an eclectic mixture of neighbors to the hotel, befitting its proximity to the station, including other hotels, sex shops, an exquisite small Italian restaurant (La Tavola), a tavern, and a pretty good Alsatian restaurant (La Taverne du Chateau). We recommend this hotel, if it is near your preferred location and you can get it (as we did) for an affordable price. There are several classes of rooms; ours was one step above basic.
This review is the subjective opinion of a TripAdvisor member and not of TripAdvisor LLC.