It is a platform where users can buy peer to peer but this is not truly decentralized. The servers running hodlhodl.com and LBC are controlled by some few individuals which makes it centralized. Bisq, on the other hand, doesn't run on centralized server as explained by o_e_l_e_o.

When we say P2P, it doesn't automatically mean that it's decentralized. Many of us are still confused with this.