customer satisfaction survey DAS Juhani DAS Tuomas electric invoice DASBoat asiakastyytyväisyyskysely satisfaction inquiry Christmas sauna vacation safety comfort order regulations regulations communality Photo competition free apartments DAS Venla renovating studios new apartment building notice of complaint vandalism moving out subrenting maintenance renovations inquiry tenant committee tenant democracy Containers Moving out Covid-19 customer service opening hours electric van maintenance service tips winter shared car christmas room temperature covid-19 DAS survey tenant activity living services memo corona Christmas sauna tenant services Temporary renting The freshman fair Das Kelo open day recycling circulation economy Finnish Christmas Christmas opening porridgeday gingerbread decoration competition surveys for tenants influencing tenant activities DAS Lauri Jukola exchange student Das Bike common bike shared living shared apartment flatmate DASnet moving in apartment card note of fault rental housing DAS Kelo communal living wood construction cleaning