The Radisson's 122 guest rooms are divided into two categories: standard and business class, in addition to 20 suites. None of the bright colours of the carpets in the corridors make it to the rooms. Other than a few touches of chocolate brown, white and black are all you'll see in these. There is a great feeling of space and comfort in the guest rooms (around 25m²). The dimensions of the Palais de Justice forced the architects to create nearly forty different layouts, which makes it difficult to describe a standard room. That being said, the decor in all the rooms is both uncluttered and warm. The amenities are worthy of the hotel's official four stars: free broadband Wi-Fi, flat-screen satellite television, individual air-conditioning, safe, minibar, an iron and ironing board, etc. In most of the rooms, the toilet is separate from the bathroom, which have a shower and bathtub. The difference between the standard and business class rooms is the inclusion of a Nespresso coffee machine, bathrobes, slippers, and a bed settee in the latter, in addition to the services already included: breakfast, films on demand and daily newspapers.

The Radisson Blu Nantes took up residence in the former Palais de Justice building, built in 1851, on 19 November 2012. Other than the façade, only the entrance hall and the courtroom of the criminal court have been preserved. The rest of the building has been refurbished to accomodate 142 guest rooms over 4 floors, serviced by 3 lifts.

The lobby has taken over the former Palais entrance hall. Nowadays, the very stylish reception counters, the pink, red and purple sofas, and the fine lines of the coffee tables have taken up residence between the stately columns. The designer furniture is by Vitra, Ligne Roset and Moroso. The exhibition of animals by the Sauvage Compagnie launched the series of rotating exhibitions that help decorate the hotel.

At the far end of the room, a long dining table sticks out of the bar, looking like the bow of a ship venturing into the lobby. Opposite, a bay window looks out onto Place Aristide Briand. Led by interior designer Jean-Philippe Nuel, the transformation of the former Palais de Justice has proven a real success. It's a real pleasure to relax with a drink under the glass ceiling. On Friday and Saturday evenings, the hall becomes a piano bar with subdued lighting.

The hotel restaurant, L'Assise, is located in the stunning setting of the former courtroom. The original high wooden vaulted walls have simply been painted white and are used as a projection screen onto which images from the world of French novelist Jules Verne are projected. Two enormous lampshades descend from the ceiling above the central tables, while at the back of the room a stylish wine cellar sits in the exact spot where the judge once sat. The elegant decor and the armchairs are similar to the style found in the lobby. The only slight drawback is that the L'Assise restaurant struggles to accommodate its 80 place capacity: space is maximised! To make the most of sunny days, and to accommodate smokers, the bar and the restaurants extend onto the small terrace outside in one of the hotel's two closed courtyards.

In terms of the cuisine, L'Assise proposes a menu based on regional products with a twist of Italian and Asian influences. There is a daily menu available at lunchtime comprised of a starter, main course and dessert at £24. If you choose to eat à la carte, budget for around £43, not including wine. A few examples to get your mouth watering: Buckwheat and salmon maki with a clementine dressing, lamb fillets flavoured with grand cru coffee and polenta with tapenade, and fleur de sel chocolate delicacies.

Breakfast, known as the 'super breakfast', is served in the same room. It consists of a buffet with no less than 40 different dishes to try. As good and as copious as it is, the price is still very steep, at just over £20!

Along with the former remand centre and police station, the Palais de Justice is part of the 19th century architectural ensemble that is currently being restored.

There is a multi-storey car park with 307 spaces opposite the hotel, charged at around £12 per day.

The hotel's clientèle is 75% business travellers and 25% holidaymakers.

The Radisson was renovated in compliance with French HQE green building standards, and applied for the French Clé Verte eco-label in April 2013.