Sam and Rosie's place was absolutely amazing. Prime location; amazing, modern, and well-equipped flat in a beautiful building. The tram stop was literally across the street. Everything felt so luxurious -- it was definitely one of the top Airbnbs I've stayed at.
You do have to walk up two flights of stairs in order to access the flat, but this wasn't a problem for anyone in my party. The flat has a great view, but you are definitely able to hear noises on the main street and the tram going by at night. Again, this didn't pose as a problem for anyone in my party -- I rather enjoyed the ambient noise myself -- but you may want to bring earplugs if you're noise-sensitive.
A pro tip: if you need to store your luggage somewhere because of a late flight on the day you check out, try this: we stored our luggage at a hotel literally across the street from the flat via a website called Stasher. £6 a day per bag. We had a great experience and it was super convenient.