That's a most gracious offer. Free accommodation is always appreciated and useful. Logistically, we usually conjoin our Ontario trips with visits to in-laws, who are in Pittsburgh. They have an extra vehicle, so we borrow that and make the drive up to visit my brother in Toronto. It would be nice to come back to Ottawa for a visit -- I was just telling my kids the other day that I'd love to take them to the Canada Day celebration in Ottawa some time.