The Villa Bellagio Blois was formally a Novotel (Google maps/street view still shows it as this). It is situated in a good location within easy cycling distance (3 km) of Blois town centre or short drive. Chateau Chambord is also very close about 20mins drive. Which is great if you want to get there early to miss the queues and crowds (recommended).
Rooms are modern and sizable (at least family rooms are) with a double bed and a sofa bed that converts to two single beds. Minor points stop this from being a really good hotel. For instance parts of the hotel feel a little tired decor wise. Our room's air conditioning was not particularly effective (opening the window wide despite the heat was much more effective) and the free WiFi was available, but connecting also too erratic. The room change laundery bags were often too much in evidence in the corridors.
There is a pool, and the restaurant serves a buffett evening meal (at least the night we were there although we went into Blois to eat). Breakfast provides a good selection trying to cover most peoples preference, cereals, pastries, breads, yogurts, cold meats, cheeses, jams, spreads, hot bacon, sausage, scrambled egg, juices, tea, coffee, etc.