Where am I?

After living more than one month in my London urban retreat and wondering why it takes them so long to send me my Nectar card I realised that there must be an other reason why I didn't get anything by post.

I don't know who and why but obviously someone else found out my mistake and changed the address on the Amazon parcel with my radio in it. I could't believe it so I had to check the number over the entry door once again. And then I realised that something went wrong when moving in... but what? Anyway, it was not 136 but 134...