Yoga Crossing is a wonderful Bikram yoga studio. Depending on the day, there are three or four classes offered (morning, mid-day, and after work times), which makes it very convenient. It is located in a great spot in Waltham, and as others said, parking is VERY easy in the large parking lot in front of the building. The studio is very clean; the entry way, bathrooms, and the yoga room itself. (Note: you have to take your shoes off when you walk in the front door) There is a changing area as well with separate stalls and curtains, which is nice (you don't have to worry about changing in front of others), and it is also separate from the bathroom.
I recommend getting to class at least ten minutes before it starts if you want to get a good spot, even more for the busier classes (5:30/after work crowd).
Pros: Clean, great instructors, several classes, easy parking
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