I live in the area.
Did a quick search and found the following hotels that appear to have in-room jacuzzis:
Gasthaus Switzerland (right downtown)
Gasthaus Switzerland Inn - Downtown Ottawa Hotel B&B - online reservations
Cardinal Suites (15 minutes southwest)
Cardinal Suites - furnished apartments ottawa, accomodations ottawa
Days Inn Ottawa Airport (15 minutes south)
Days Inn Ottawa Airport
You may also want to check out these hotels which are both new and luxurious and have pretty nice in-house spa facilities. Not sure about in-room stuff though.
Hilton Hotel Gatineau Quebec Canada - Lac-Leamy Hotel - Gatineau, QC Canada Hotel
(across the river in Gatineau, Quebec but just 5 minutes from downtown Ottawa; part of a largish casino, dining and theatre complex)
Brookstreet - Official Site - luxury hotel in Ottawa - conference - golf - spa
(about 20-25 minutes west of downtown in the suburb of Kanata; a short drive from the Ottawa Senators arena; some fine dining on site plus shopping etc. a short drive away)