The room I got was a bit unusual, and you probably should not assume the other rooms in the guesthouse will be similar. So let me tell you about my room, and then I will make some comments about the complex. Let me start off by saying that overall, I had a great week here.
I was looking for economy, and the price was great. My room had a previous life as a poolside patio before conversion into a huge guest room. Street side was open air, so some mosquitoes, some noise at night. No air con, of course. I really did enjoy sleeping in the heat, under a sheet. Kitchenette had a microwave but no stove. I mostly ate fruit and yogurt for breakfast, so no big deal.
Location was great, Central La Madera, lots of mid range restaurants up and down the street catering to all tastes. Easy walk to central Zihuatanejo, shopping, municipal beach (a party every night) and to Madera beach. The beach is popular with Mexican tourists, and was not crowded. I felt quite safe everywhere I went. The drug problem and associated crime has reached Zihuat, but was not visible.
The complex has a small pool, which was very refreshing. The pool is not in the sun, and so is used to cool off after the beach. The water was quite cold and clean. Very nice to take a dip before bed.
Don`t go here if you expect five star rooms in a sleek modern building, or impeccable service. Go here for honest value and great location.
Other rooms apparently had air conditioning, and could be sealed up. There is a nice restaurant (la Gula) in the building, which is a bit pricier (full meal deal for about 200 pesos) than the others along the street. La Gula was a bit lonely, but menu was creative and the food was very good.