I love maple flooring. It is a very hard species (see basketball courts and bowling alleys) and I think it also a very beautiful species. In my years in the flooring business, I have seen, worked on, and installed many maple floors. The critics of maple flooring typically say that it is too light in color, or that the floor shows too many gaps. I'll speak to both of those points specifically...and then let you decide if maple is good fit for your home or business.
The natural color of maple flooring is something you are either going to like or dislike; so this is a matter of preference. I do meet people that think they are stuck with whatever color it is, and don't like it; in which case I advise them that there are options. First, a natural maple floor finished with water-based finish is going to look a lot different than a maple floor that is finished with an oil-based finish (see pics below). Secondly, a maple floor, if properly sanded and conditioned, can take a stain and look absolutley stunning (picture top left and another stained maple floor below). That said, many flooring contractors will say they can stain maple and then proceed to do a horrible job. There are also contractors that will say that you just simply can't stain maple floors.
Choosing a compitent flooring contractor is a whole different topic, but trust me, there are floor sanders in every market that can and do stain maple correctly. If you are outside of the Denver Metro area and ProWorks Flooring is not an option, I would definately have any contractor who says he/she can stain maple, provide references and pictures.
The reason why staining maple is so hard is because the wood is very dense, thus making it difficult for the wood to absorb stain. We use special techniques to sand and then condition a maple floor that is different than when we stain oak.
With regard to gaps in the floor, this is typical of any hardwood, but often more noticeable with maple. Maple, being a very hard wood, is less stable than oak; meaning that it will expand and contract more than oak with changes in relative humidity...not much, but enough to notice. Also, especially when it is finished naturally with water-based finish, maple is very light in color; almost white. Thus the gaps, which appear black, will contrast more than they would on a darker floor and appear more obvious.
If the thought of gaps is bothersome, I would recommend staining the floor a darker color. Or, you may try installing and running a humidifier (and or de-humidifier depending on where you live) to keep humidity levels in the home as close to 40% as possible. If you can maintain close to 40% humidity year round, the wood will be remain stable, greatly reducing its tendency to expand and contract.
The basketball court shows maple with oil-based finish. The kitchen shows maple with a water-based finish. The last picture (and the one up top) show maple with different stains.