This is an oversimplification. You need to add goods and services to your hypothetical situation for it to make sense.
Say there is one hotel room and the alternative is sleeping on a park bench. The cost of the hotel room is 1 BTC. The price of Bitcoin is peggged to the perceived value of the room by the market.
The reason why currently the price of BTC is rising without goods being traded is speculation by investors that this will be possible in the future.
This is the equivalent that it costs $10 a night to stay in the hotel room but in 2 days time it will cost 1 BTC. If BTC is trading at $5 USD then it will be a good deal to buy BTC today as long as I have enough money that I’m not homeless in the interim.