We have a stop over in Seattle on our way to Hawaii for our honeymoon. We have a short time on the way there, we get in at 4pm and depart at 2pm the next day. So probably not going to do a whole lot on that day. On the way back we get in at 6am and don't depart till 3 the next day so we basically have a whole day. I have never been to the city so not sure what there is to do besides the space needle. Also should I stay in downtown Seattle or near the airport? Is a rental car needed? Any suggestions recommendations would be appreciated.

