The logo will be found in your images folder called logo.png
You can change this whatever image you want (I suggest to just open it in paint, CTRL + A , delete and paste your new logo (You can find them from http://habbox.com)
The logo for the client is found in your R63 Folder called "habbo.swf" To edit the image you need a SWF decomplier and then you open the images, edit image 1, replace it and then put it back in. If you need help with this just reply with your habbo.swf and I'll edit it for you , for free. If you want more work done (Like editing colors and shit for the hotel) then I will require something.
If there is a logo on your hotelview you can edit this by just changing your hotel view found in IMAGES usually under something like hotelview_hq or something in a rec. folder depends what CMS you have Rev or Uber but its fairly easy to change (For a direct link to the image check your external variables and follow the hotel_view path)