I have a nice guestroom (14 qm) for you in my appartment (80 qm) with a great balcony in Hamburg-Eilbek. The public trainstation is not far away (U1, in 3 minutes and S1 in 8 minutes).
Many shops and the shoppingcenter Quarre (with a kino) are nearby. You can go for walk in parks or you go in the city in 8 minutes by train. And if you need a tip I'll will help you to have a great trip in Hamburg.