I'm looking for a service in the Seattle area that will let me provide
a "front" for a home office. My criteria include:

* Seattle area: Seattle, Bellevue, Kirkland or Sea-Tac.
* phone service -- they'll give me a unique phone number that will be
answered by a voicemail system or a live receptionist or both, with a
greeting I can specify. It would be great if I could be alerted bout
messages, or calls could be forwarded to me.
* mail service -- they provide an address with a unique suite number
for me where packages can be mailed and delivered, and are then either
forwarded to me, or I can go pick them up.
* conference room -- I'll occasionally need a conference room. I want
to be able to schedule it in advance, and I may need Internet access
for laptops and a projection system or large monitor (preferably
both). I would prefer a "pay as I go" approach on the conference room,
as I'll probably only need this rarely.
* I would greatly prefer a price of around $100 per month for this
service, though I'd be willing to go as high as $200.

I am *not* looking for a list of available office services or
incubators, rather I would like an answer with a specific
recommendation based on personal experience and specific knowledge of
the cost and quality of a particular facility.

Any other recommendations, comments, or general advice is welcome,
too.

Thanks in advance.