We visited the largest city in Ecuador, Guayaquil, en route to Peru. We spent only one night in the city, so didn't get to see much of it. However, we did have a chance to visit its beautiful Malecon 2000 a couple of times, which is a very nice, safe, modern waterfront park on the river side of the city.
The Malecon has an IMAX theatre, a couple of playgrounds, restaurants and many statues along its path, both the typical ones of political leaders and more modern artistic types. There is also a large tropical garden with a duck pond and many beautiful plants.
Guayaquil also has the most impressive bus terminal we've ever seen. A large, three storey affair, the terminal houses the ticketing agents for all the bus lines that travel to and from Guayaquil, making transfers extremely easy. The terminal is also a good-sized shopping mall and has many eateries. We were able to kill 6 hours of waiting time between window shopping, eating and finding free wifi on the top floor.