I visited Valparai alone. I found Green hill hotel to be a very decent with a compound parking (a bit tight though and the staff will ask you for your car keys). The rates of the room were tad expensive if you ask me. I managed to bargain a single room without TV for Rs. 600 as I was alone, checked in late and planned to leave early next morning. There is restaurant below and it's a bit expensive. Overall, decent.