We have been staying for 2 nights in Novotel Monte Carlo as a family of 4.
Hotel location is quite convenient - about 6 minutes downhill from the casino, 1 minute from a bus station where you can board a direct bus to le Rocher. Close as well from the exotic garden.
Staff is gentle, helpful and professional, but maybe a little short in numbers - waiting time for check-in or at the restaurant can be a little long. Free gifts for young children is a detail, but still it is nice.
The family room we booked was nice, clean and in perfect working condition, if a little bit small.
Hotel amenities were excellent. Good Wifi, touch display in free access for all information regarding the city, nice and very clean swimming pool...
Restaurant was nice as well, with a very good and generous breakfast (though as I mentioned staff seemed a little overwhelmed at times), and decent cooking for lunch or dinner.
Overall a very good stay, at a very reasonable price for Monte Carlo. Highly recommended to families (hotel can help organize baby-sitting for young children if needed).More