Once you made a reservation and go to the location you can let them know you have arrived by chat and they will pick you up from downstairs. In my case in the last garage in the next street (you can go up there with the elevator or stairs). You can also store your bike here if needed but do remember to get everything off the bike to be sure. Barbara will also tell you.
The rooms have everything you need. A kettle, a refrigerator, table, chair, tea, closet, bathroom with a good schowerhead (but you have to stand a bit closer to the wall then used to) and of course a bed!
Some owners you always see around and some owners you will never see. Barbara and Michele you will mostly see in the morning with the italian breakfast but will always be there if you need them (didn't test it but I'm positive about that).
*If you are travelling by bus/tram, make sure to also buy a 100 minute ticket to get back before shop closing times, otherwise you need to walk back to the Macini bus station where there is one big red ticketmachine which accepts maestro and cash.
Both owners are very open about everything, so don't worry about a good morning chat :)