YYZ experts -

We'll be flying into YYZ on the AC red-eye from SFO and will be flying out to YHZ in the evening (single ticket, Biz class). We plan to go out into the city for the day. Also have priority pass. Is there any lounge we can access upon arrival into YYZ before going out?

If not, is there any hotel nearby (or on the way to Niagara) which has hourly rates? Basically need it for 2-3 hours to rest a bit and freshen up.

Sorry if this has been answered before, but a quick search didn't show any useful results.

thanks in advance...