I stayed there with my partner for 3 nights with half-board.
The hotel is easy to find, the signs are clear. Although there is a bigger road close by, the hotel is surrounded by trees and it is not noisy. Place is pleasant with nice and helpful staff. Free parking available just in front of the hotel. Wi-fi for free, Skype didn´t work though, after 1 minute it always was interupted.
The room was big enough, clean and equipped with everything we needed. Three negatives: very dark room as there was a big tree in front of the window, the room needed air as there was a smell everytime while returning from the trip in the evening, very soft and small double bed (140cm).
The restaurant doesn´t have a wide menu but everything we have ordered was VERY tasteful and elegantly served. Good prices, although the main course is not a big portion (menu available on their website). Delightful desserts. Nice Hyeres wines served by glass. Service was just right, waiter was there just in time when we needed and left us in peace in a right moments, too. Breakfast was nice too, always extremely fresh baguette and croissants (plein or with chocolate), choise of cheese, ham, prosciuto, marmelade, honey, joghurt. What we didn´t like was the machine for coffee and tea as the water smelled. We have ordered normal nice coffee (Nespresso:-)) instead and it was worth it. Taste of juice from a different machine was ok.
You can enjoy your meal at the terrace under olive trees, very pleasant place to eat and relax.

I stayed here for one week on business: my company booked it based on suggestion of one of our local supplier.
When I entered my room I would liked to change the hotel. The furnishing was quite old and found some spots on the blanket. No international Tv channels, no frigobar, old tv, old shower.
Anyway the room was quite clean (excluding the blanket) and people working at the hotel (frontdesk/waiter) are very very kind, so eventually I decided to stay.
I got a weekly ticket for wi-fi connection (20euro) and the signal in my room was excellent (faster than at office).
The restaurant of the hotel is very good and with excellent quality/price, but opened only for dinner (I got all my dinner here). Breakfast is acceptable, but please do not take the orange juice!
I did not have so much time to go around, but Hyeres itself is an enchanting touristic typical Cote Azur village. It is at a walkable distance (10min) from the hotel.
At the end of my stay I cannot say it was negative, but If I go back on Hyeres, probably I will look for something else.