TL:DR Hubben is closed for polishing 1-3 July.
P.R.I.T. is performing maintenance of Hubben, and a part of this is polishing the floors of Hubben. This will happen 1-3 of July. Since inhaling the air during polishing and a few hours after is a health hazard, and walking on the floors might damage them - Hubben is closed 1-3 of July (Monday-Wednesday)
Smurfull regards - P.R.I.T.