Keitarou's Empty Room. Don't worry, Ghost not Included.
How do I start... well... just like before, it's a Hinata Inn from Love Hina but this time, it's in Blender Format. I've managed to convert the map using Nem's Tool's Crafty Software. It also supports other map formats like in Quake, Half-Life 2, Garrys Mod, etc. etc.