We visited Busan just a week ago (Nov 2014). This is our 2nd time stayed in this guest house. I would say, it is 1 of the best guest house in Busan, which is very near to the shopping area and subway station (Nampo), just 3 minutes walk from exit 15. Shopping of skin care product is totally not a problem. Wide range of foods selection too. For those who like fresh seafood, Jagalchi just within 5-7 minutes walk. Don't forget to drop by at Lotte departmental store (via Nampo underground shopping), to take a look for a musical fountain, Lotte skypark for mini zoo & sunset of view.
The staff there are so kind, helpful & friendly. Credit go to Ms Maria. She is good command in English. Communication and seek information is easy. Alternatively, opposite there is a tourist information center, just within 5 minutes walk. Visitor friendly.
Room is clean, private bathroom and come with breakfast. Breakfast served with bread, egg, milk, coffee, orange juice. Fruit like banana & pineapple. It's refillable. It's enough for energy boost to start a day. Other facilities towel, air cond, hair dryer & washing machine.
I hope this info will help you to choose a good stay in Busan & i'm highly recommend Funstay Inn guest house to you.