S K.
Yelp
As a frequent European traveler, I rate this as an excellent hotel in just about every respect.
The rooms are nicely done. The hotel building itself is not modern, but the rooms have been renovated recently and are designed very well, with dashes of modern styling. They are comfortable and set up well for people who need to work while traveling, including a comfortable desk with a well-positioned plug-point. The hotel also has some nice touches, like a water dispenser that offers sparkling water, and a non-smoking floor. My only complaint was that the WiFi signal was weak (but good enough that we didn't feel compelled to leave the room and wander the halls looking for a stronger signal). WiFi setup was unfussy, so we could easily connect multiple devices and did not need constant re-authentication.
The location is outstanding, half-way between the main train station and the main city square (Place de la Comédie), no more than 2-3 minutes from each. All the tram lines converge in the vicinity, so getting around is straightforward. For those attending a conference at the Corum, that's less than a (pleasant) ten minute walk away. There's a very good boulangerie just around the corner, for breakfasts. (The staff pointed me to it, and never tried to upsell me into getting the hotel's breakfast.)
The staff were generally pleasant and helpful, though some were much more so than others: one lady never talked or smiled (always talking on the phone), while one gentleman was born to be a hotelier, and every interaction with him was fantastic.
I would stay again at this hotel without the slightest hesitation. Indeed, I would be happy to find comparable hotels elsewhere on the continent.