The cheapest apartment in Monaco start from about 700.000-800.000 euro for humble 18-20 m2 studio. 100-150 years ago these were maiden rooms occupying lower basements, villas backyards, later moved to ground/first floors of newer residences as rich people did not like those levels. Servant's chambers can still be found on many floor plans. Surprisingly, Monaco studios may currently reach the price of 1,5-2 million euro and even more depending on location, surface, quality. Imagine that 30 square meter studio cost 2.500.000 euro, for 40 sq.m. one might pay 3.000.000-4.000.000 euro. Be careful, advertisement “100 meters for 2 mio euro”, it is either mistake or fraud or most likely viager (acquisition of property with elderly person staying there till death upon certain rental fee paid monthly by the buyer). No millionaire looks ready to enjoy tiny studio while this money could buy him a lux home somewhere in Greece, Croatia, Montenegro first sea row, with pier, private beach line. However, cheap property for sale in Monaco seems highly demanded as it allows getting Residence status accompanied by 0% income tax. Don't regard mini-studio as expenditure, it is golden investment, ticket to tax-free world. It is not at all a student accommodation. Can serve as study, guest apartment, business meeting space in the future. Especially valued are cheap apartment in Monaco of mixed usage with address used for local company registration. Most popular solution is acquiring small studio worth 1-1,5 mio euro for papers adding high-class villa in neighbouring France for 2–4 mio euro in Beausoleil, Roquebrune-Cap-Martin, Menton, Eze heights. Two-four million € is budget of 200-300 m2 in these locations, if you move closer to the sea price immediately doubles or triples.