Good Luck IGOROPERA!!
Try Winter Park, as close to Park ave as possible.
College Park or Downtown Orlando. However, Downtown is very spread out and living there is not necessarily going to provide the best walkable neighborhood. It really depends on location within Downtown.
Celebration or Baldwin Park are communities that were designed with the Principles of the New Urbanism. This provides a walkable community with a small downtown area.
There are a few choices for you, but it varies widely by price. So, if you want more specific info, click through to my profile and send me an email. You can also visit my site by the link below. There you can search MLS listings by map which will help when searching for walkability and density.
Best of luck with your move,