Charlie’s place was perfectly located near great restaurant, bars and shopping. In the same building downstairs is a fine dining restaurant called Kagges that you should definitely visit (you’ll need a reservation because it’s regularly booked 2 weeks in advance). Across the street is a cocktail bar with great staff called Corner Club. Also highly recommended. There are countless other places in Gamla Stan and beyond that are well within walking distance.
Charlie’s place was perfect for our needs (I was traveling with one other friend) but I probably wouldn’t recommend more than two people or perhaps a small family if 3 or 4.
Charlie was very responsive and gave great directions to his place (it’s very easy to find as it is literally one block from the subway station. Highly recommended!