seattle people! advice for a tawdry assignation? (not mine)

so, a friend of mine is going to seattle to meet someone for a tawdry assignation. a booty call, if you will.

she's asked me for advice for a hotel in the downtown area - reasonable situated for walking around downtown being a tourist in between the tawdriness. i assume the edgewater is too pricey. thoughts on hotels in the area?

thanks!