I won an Ironhack hackathon based on this idea. Tricky to execute though as furniture is big, heavy and logistics become expensive. If you have 100 customers renting sofas for 6 months (because ifthey rent longer, why should they not buy one themselves?), you will end up moving a lot of furniture.
And how do you manage offering? Products from your own warehouse, or P2P, or both? Pure P2P would require no stocks, but also reduce the amount of products available on the portal which would make it less attracting.
For an early market research test we created a profile on the local craigslist and asked people selling their sofas if they were interested in renting it out instead.. Then we also created a profile offering to rent out a sofa. Limited interest but we did get some fun response..