Welkom bij HOS, al 25 jaar dé schoonmaakspecialist. HOS, voluit B.V. Hotel Operational Services, is gespecialiseerd in het schoonmaken van hotels, in en rondom Amsterdam. Van 1 tot 5 sterren, van 9 tot 425 kamers. Onze jarenlange schoonmaakervaring en goed opgeleid personeel is ons visitekaartje. Klik hier om onze website verder te bekijken. Welcome to HOS, the expert in the field of cleaning for the past 25 years. HOS, or more accurately B.V. Hotel Operational Services, specialises in cleaning hotels in and around Amsterdam. From 1 to 5 stars, from 9 to 425 rooms. Our many years of cleaning experience and highly trained personnel are our calling card. Click here to visit our website.