due to risks of tectonic activities and security, Rubavu city should only expand into Rugerero , Nyundo and Mahoko. the district should encourage people to build there instead of starting new buildings in gisenyi town which is prone to tectonic activities and has a vulnerability of being at a border with an insecure country. 
so, technically speaking, gisenyi is not a good place to put new modern multi-level buildings. but Rugerero, Nyundo and Mahoko would be more ideal. @RubavuDistrict , @promulindwa, @RwandaLocalGov