First of all, Mark's apartment is HUGE! Very spacious bedroom, living room, stocked kitchen (with coffee and tea) and bathrooms. It's a 3 bed, 2 full bath, and there was another couple staying there at the same time, but we didn't run into them at all. It's an old building, but kept very clean. The neighborhood seemed safe enough, and it's super close to public transportation, both trains and bus. I would just suggest bringing some earplugs and a sleep mask if you're a lighter sleeper, because it's on a busy and bright street. Mark is very welcoming, helpful and flexible, and has pretty much anything you'd need. I would highly recommend saving some money and staying in this giant apartment and not in a smaller, more expensive place downtown. I'd definitely stay here again.