Last time I did market research

It's currently not as legible as it could be. I read it as "otel 24".

I also don't like any of the others for the same reason.

What's the thinking behind the blocks behind the type? I don't really understand it.
I agree with Paul, just something not quite right about it.

Maybe if you can separate the characters from the edge of the logo but keeping the same style then it might look better?