Spa bath install and access door?

A couple of queries on bath installation;

Pump postion. I am trying to decide the best position for the pump. I know it needs good access but i'm not sure if I should either install it under the end of the spa bath and create an external access door. (How would I create such a door? - currently it's blueboard that will be rended later) Or install it on the outside wall however it's a 1st floor bathroom so the pump would be visible 1/2 way up the wall from another window in the house - something i'd like to advoid.

Also whats best - installing over tiles or tiling up to the edge. My tiler said that it is much easier for him to tile before the bath goes in but I would like to know whats the better method not just the easiest for the tiler.

thanks


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