Failed to call hook 'OnEnterZone' on plugin 'Hotel v2.0.26' (NullReferenceException: Object reference not set to an instance of an object)
  at Oxide.Plugins.Hotel.HasAccess (BasePlayer player, System.String accessRole) [0x00019] in :0 
  at Oxide.Plugins.Hotel.RefreshPlayerHotelGui (BasePlayer player, Oxide.Plugins.Hotel+HotelData hotel) [0x000db] in :0 
  at Oxide.Plugins.Hotel.OnEnterZone (System.String zoneId, BasePlayer player) [0x000f7] in :0 
  at Oxide.Plugins.Hotel.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x00b43] in :0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0 

Failed to call hook 'CanUseLockedEntity' on plugin 'Hotel v2.0.26' (ArgumentNullException: Value cannot be null.
Parameter name: String)
  at System.Number.StringToNumber (System.String str, System.Globalization.NumberStyles options, System.Number+NumberBuffer& number, System.Globalization.NumberFormatInfo info, System.Boolean parseDecimal) [0x00003] in :0 
  at System.Number.ParseInt32 (System.String s, System.Globalization.NumberStyles style, System.Globalization.NumberFormatInfo info) [0x00013] in :0 
  at System.Int32.Parse (System.String s) [0x00007] in :0 
  at Oxide.Plugins.Hotel.CanRentRoom (BasePlayer player, Oxide.Plugins.Hotel+HotelData hotel, System.Boolean isExtending) [0x002c4] in :0 
  at Oxide.Plugins.Hotel.CanUseLockedEntity (BasePlayer player, BaseLock baseLock) [0x00152] in :0 
  at Oxide.Plugins.Hotel.DirectCallHook (System.String name, System.Object& ret, System.Object[] args) [0x001e8] in :0 
  at Oxide.Plugins.CSharpPlugin.InvokeMethod (Oxide.Core.Plugins.HookMethod method, System.Object[] args) [0x00079] in :0 
  at Oxide.Core.Plugins.CSPlugin.OnCallHook (System.String name, System.Object[] args) [0x000d8] in :0 
  at Oxide.Core.Plugins.Plugin.CallHook (System.String hook, System.Object[] args) [0x00060] in :0 

That looks like you may not have left the zone and reentered after you built the hotel.. and tried to use a door, Is that possible?

Wipe day for the server in 10 hours, i will try again then. all other features worked like creating/looking for rooms. NPC Created and the default menu pops up showing the hotel stats like "11 rooms available". but nothing more.

*will test after wipe also add video if it doesnt work