in over all the hotel is OK, the room was big, the beds were fine (comparing to the the foam mattresses we suffered most of our trip...) the shower had running hot water! (big problem in Madagascar).
the stuff was helpful, the restaurant was so,so.
the price wasn't cheap at all in MAD standarts, reasonable, but remember that sunny garden is out of town center. On the other hand - it's location is very good for sneaking to the airport: the roads around tana are very slow, lets say that in some hours the city is one big traffic jam... so, for us, the self drivers the hotel was excellent: 7 minutes to the train station, to park and eat and walk the city center, 30 minutes to the airport bypassing the city