The location is perfect. Windows face away from the street, so it's quiet, but when you step outside to Pike, it's 2 short blocks to the right for a trendy neighborhood with lots of cool restaurants and active night life. To the left, it's 1 block to the convention center, 2-3 blocks to the heart of downtown shopping, restaurants, and transit, and a few blocks more to Pike Place Market and the waterfront. We rented a car to explore the greater Seattle area, and Connie's add-on parking option was convenient and great for peace of mind. (Street parking out front was easy to find, but limited to 2 hours during the day. There are garages a few blocks left on Pike, but prices and availability will vary based on season and events. One was only $6/day when we were there, but filled by mid-day on weekdays.)
The condo itself is clean and well appointed. I loved the inclusion of q-tips and cotton balls in the bathroom, and several teas (and a teakettle) in the kitchen. The building was very quiet, but I think the walls are thin, so be aware that your neighbors may hear you!
The heater is loud, and it will probably wake you up with its clanging right next to the bed in the very early morning. However, we found that we could turn it off when we went to bed (control knob is down next to the couch) and still be plenty warm until morning, even with snow outside!