Cheap and cheerful - Premiere Classe Le Mans Ouest, secure compound, 40 euro, breakfast. The only downside is there aren't many places for an evening meal although there is a bar, restaurant and cash point a stones throw away.
A lot nicer - Hotel Mercure Le Mans Centre, totally secure parking, 130 euro, breakfast. Loads to see, 5 minutes walk from restaurants and Le Mans Cathedral. When we got back at 23.30 for a nightcap the barman brought us our drinks and then a huge tray of meats, cheese, bread, olives etc for gratis.