Silver Cloud Hotel near Safeco field
Stayed at this hotel to take in a baseball series. It is literally across the street from both Safeco field and the Seahawks field. The rooms are nice, quiet and clean. The hotel offers a complimentary shuttle for drop off and pick up to most local attactions in downtown Seattle. This is a benefit as the parking and traffic in Seattle seems costly and congested. In addition, most of the downtown hotels are charging about $22.00 a day to park your car. 
The restaurant in the hotel has a limited menu and it is hard to find an inexpensive breakfast or lunch if you are travelling with family. There is not a lot around the hotel for a quick fast food type of bit..so your choices are limited. 
If being very close to the sports stadiums in imporant to you, this is a good hotel. As far as value, if I was to travel back to Seattle, I would book a hotel that is less expensive, but still within walking distance to Safeco field. I didn't in the end, think the extra cost was justifed and Seattle is a pretty condensed city for those that are okay walking for a bit.