Citizens of Waltham have a new opportunity as 53 new affordable housing units are opening to the public. Alexan Waltham is a new housing development next to the Wayside Walk and Bike Trail and half a mile from the Waltham Commuter Rail Station. The development is home to amenities such as “a large clubhouse with a resort-style pool and sun deck, a modern fitness/wellness center, bike storage, dog park and pet walking stations. This project will offer residents either surface or covered parking,” according to the SEB Housing website…