Hi Alex,
See below for responses regarding Zefi's group. Brian and Gaya - feel free to add.
2) There should be no concern here wrt to Zefi's group. They are paying a pro-rated rate based on exactly what Anay and Atsushi are paying for June.
3) We were not aware that the guy who is subletting Jamaal's room starting July 1 had moved in earlier than his sublease start date. We'll reach out to Zefi and see if there is a way for that third person to contain his presence in common areas during the daytime, and only use the common area for actual sleep. Unless someone has an Aerobed in the house? If so, we could ask that the third person sleep in either Zefi or Leo's room.
Regarding the use of the upstairs common area - as Peter mentioned, Zefi promised to keep the work area tidy and to not work during unreasonable hours.
Lastly, I want to note that we collectively picked Zefi's group because they seemed to be good natured people who would be respectful and considerate not only of the house, but the other tenants in it. Hopefully that's coming across to you as well -- I'm sure Zefi's group would be open and receptive to your feedback so if you feel they are working too late or making a mess, please feel free to communicate that directly with them, too.
Courtney J. - when is Dan doing a walk through? Melissa / Courtney / Brian / Gaya - let's all reach out to our subletters and ask them to clean up before Dan comes.