I stayed a week at both of the Huntsville Springhiils in the last month and I prefer this one slightly. They are both very new and clean, both offer the same free Marriott breakfast choices. However, I like the layout of the bathroom in this one. The downtown one has bathrooms split into 2 sections, whereas this is pretty much a standard hotel unit. The rest of the room is similar, and seems to conform to the 'psuedo-suite' trend of having a good sized living area/work space 'room' separated by a partial wall to the bed 'room.'
Front desk, housekeeping, and the breakfast people were all "Alabama nice!"
The location is very convenient....right on the edge of the "New Urban" development of Providence, right near the intersection of 255 and University. Very convenient for food (1-minute walk to about 5-6 restaurants) and access to Redstone (10 minutes, maybe, to the main gate).
Couple of dings: Clothing storage options were limited. One fairly big armoire which was good for hanging stuff, but the drawers were tiny. Could barely hold my socks, and would not hold a folded up t-shirt. The other slight negative was the pool: it was tiny and there was no hot tub.