Alternate route: Bangalore - Hoskote - Chintamani - Rayalpadu - Madanpalli - Horsley Hills (Even though this route saves you some 20 km, the road is narrow and not very good. There are some very large potholes on the way. Not recommended for small vehicles.)
Alternate route two: Bangalore - Hoskote - Kolar - Mulbagal - Palmaneru - Punganuru - Madanpalle - Horsley Hills (this route is approximately 195 km from Bangalore depending upon where in Bangalore you are located). This route is better because you drive on NH4 upto Punganuru and then NH219 and NH205 upto Madanpalli. The road is very nice to drive on although there is truck traffic on NH4.
Beautiful views of the plains. It is almost like flying. Next to the resort there is an old zoo. Try finding the crocodile there :-)
Lots of animals and plants on Horsley Hills and the idyllic sorrounding area. Go photo hunting :-)
You can eat at AP Tourism's Punnami resort. Food there is nothing to write home about though Idlis for breakfast are decent.
You can buy ingredients in the nearby city of Madannapalle (get there by auto rickshaw) and ask for Devdas at Hotel Horsley, the very little place next to the resort, to cook it for your. It doesn't cost much, but it tastes like heaven. He is an excellent cook.
This is located in chitoor
Go to amazing Bangalore, if you need the big city for a while... great shopping, dining and disco-ing there. It's less than a 3 hour ride, and you an get cheap and nice accommodation there near majestic bus station.
There is a bus from Madannapalle to the beautiful temple in Tirupati. The bus goes through Arogyavaram, a little village in which lies the old tuberculosis sanatorium. Very beautiful place, but it is still a medical center, so you will have to contact the center if you wish to explore the area.
From Bangalore you can catch a train to most parts of southern India.Nice way to travel around in the south.
About ? hour away from Horsley Hills lies Madannapalle.. You can do some shopping there, buy a Salwar kameez or sari. There is a nice little super market there, several Internet places and lots of small shops with dozens of stuff.