Central District Room charge (approx)
Mandarin Oriental

https://www.mandarinoriental.com/hong-kong/victoria-harbour/luxury-hotel

 HKD5,180
   
The Landmark, Oriental

https://www.mandarinoriental.com/hong-kong/the-landmark/luxury-hotel

 HKD5,950
   
Four Seasons

https://www.fourseasons.com/hongkong/

 HKD5,300
   
Soho District
The Pottinger Hotel – Soho

https://www.thepottinger.com/en/

 HKD2,000
Ovolo Central

https://www.ovolohotels.com.hk/ovolocentral/?lang=zh-hant

 HK$1,900
Lan Kwai Fong Hotel

https://www.lankwaifonghotel.com.hk/en-gb

 HK$1,200
Admiralty District
Conrad

http://conradhotels3.hilton.com/en/hotels/china/conrad-hong-kong-HKGHCCI/index.html

 HKD3,680
JW Marriott Hotel

https://www.marriott.com/hotels/travel/hkgdt-jw-marriott-hotel-hong-kong/

 HKD3,450
 
Island Shangri-La

http://www.shangri-la.com/hongkong/islandshangrila/about/

 HKD4,350
   
Wanchai District
Empire Hotel

http://www.empirehotelsandresorts.com/en/ehh/overview.aspx

 HK$880
Gloucester Luk Kwok

http://www.gloucesterlukkwok.com.hk/

 HKD1,200
Brighton Hotel

http://www.princetonresidence.com/en/brighton-hotel.html

 HKD650
Burlington Hotel

http://www.burlingtonhotelhongkong.com/

 HKD700
Causeway Bay District
The Park Lane Hong Kong

https://www.parklane.com.hk/

 HKD2,548
   
The Excelsior Hong Kong

https://www.mandarinoriental.com/hong-kong/the-excelsior/luxury-hotel

 HKD2,199
   
Crowne Plaza Hong Kong Causeway Bay

https://www.cphongkong.com/en-us/

 HKD2,340
   
Regal Hongkong Hotel

https://www.regalhotel.com/regal-hongkong-hotel/en/about/about-this-hotel.html#tab_0

 HKD1,740
   
L’ hotel Causeway Bay Harbour View

http://www.lhotelgroup.com/en/hotel/lhotel-causeway-bay-harbour-view/Home

 HKD1,425
Tsim Sha Tsui District
Sheraton Hotel

https://www.marriott.com/hotels/travel/hkgsi-sheraton-hong-kong-hotel-and-towers/?scid=bb1a189a-fec3-4d19-a255-54ba596febe2

 HKD1,800
Peninsula Hotel

https://www.peninsula.com/en/hong-kong/5-star-luxury-hotel-kowloon

 HKD4,400
Kowloon Hotel

https://www.harbour-plaza.com/kowloon/Index-en.htm

 HKD1,000

 

The closest hotel is definitely the Mandarin Oriental (though this is quite pricey).  It is just across the road from the main venue and connected by an overground, covered walkway.

https://www.google.com.hk/maps/dir/Mandarin+Oriental,+Hong+Kong,+Connaught+Road+Central,+Central/Deacons,+Central/@22.2815914,114.1566885,17z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x3404006465228fb9:0x714d79b4857054f3!2m2!1d114.1593932!2d22.2820963!1m5!1m1!1s0x340400648cba4cf9:0xbac330243bb0edac!2m2!1d114.158365!2d22.281508!3e2

 

The Lan Kwai Fong hotel is right in the middle of Hong Kong’s most (in)famous drinking district, and incidentally is in the same area (opposite building) to where the dinner/drinks will be held on Friday night. https://www.google.com.hk/maps/dir/Lan+Kwai+Fong+Hotel+@+Kau+U+Fong,+3+Kau+U+Fong,+Central/Deacons,+Central/@22.2830533,114.1535528,17z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x3404007c862302b1:0x3cffb56c0c6d06a6!2m2!1d114.153118!2d22.28429!1m5!1m1!1s0x340400648cba4cf9:0xbac330243bb0edac!2m2!1d114.158365!2d22.281508!3e2

 

It is also possible to walk from the hotels in Admiralty in around 20 minutes, or it is one stop away on the MTR.

e.g.  https://www.google.com.hk/maps/dir/JW+Marriott+Hotel+Hong+Kong,+Admiralty/Deacons,+Central/@22.2795695,114.1578011,16z/data=!3m1!4b1!4m14!4m13!1m5!1m1!1s0x34040067b07e5c31:0x6f7628bafb0ef5bc!2m2!1d114.1653936!2d22.2776447!1m5!1m1!1s0x340400648cba4cf9:0xbac330243bb0edac!2m2!1d114.158365!2d22.281508!3e2

 

The hotels in Wan Chai, Causeway Bay, and Tsim Sha Tsui are each only a few stops away on the MTR.

 

A map of the MTR system can be found here.