Carlos is a really nice, friendly and helpful guy.
I actually stayed in Apartment 3, on the top floor with its own private terrace (complete with a small outdoor kitchen). The view from the huge terrace is amazing! It looks right onto the Bahia Principal (where it's safe to swim - a few minute's walk away), and is unbeatable.
The rooms are very spacious and clean, and very bright.
I did initially have some difficulty locating the property (taxi can only go as far as the road above or the road below - this property is located mid-stair way), but the neighbours seemed to know "Carlos" and directed me to the right door.
Being located right by the main night life of the town means there are shops, restaurants, bars (music is very loud at night, take ear plugs), beach, street vendors, taxi stand (basically everything) on your doorstep. Other beaches such as Puerto Angelito and Playa Carizarilla are also about a 20 minute walk or a 25 Peso taxi ride away. The famous surf spot of Zicatella is also within walking distance. Airport is about 10 minutes in a taxi (50 Pesos) away.
All in all, a really conveniently located property with excellent views of the bay (from Apt 3), with owner always willing to help with whatever you need - he even took me to a surf school when I mentioned I wanted to try it!