N	Attributes	Attribute performance					Performance difference (Mean as reference)
		R 1	R 2	Within	Recovering	Mean	R1	R2	Within	Recovering
1	Service	0.718	0.702	0.755	0.734	0.727	−0.013	−0.035	0.039	0.010
2	Room	0.608	0.611	0.587	0.555	0.590	0.030	0.035	−0.005	−0.060
3	Breakfast	0.682	0.667	0.673	0.581	0.651	0.048	0.026	0.033	−0.107
4	Location	0.755	0.733	0.738	0.760	0.747	0.011	−0.018	−0.012	0.018
5	Environment	0.889	0.895	0.917	0.871	0.893	−0.004	0.002	0.027	−0.025
6	Facility	0.623	0.636	0.538	0.545	0.585	0.064	0.086	−0.081	−0.069
7	Front-desk	0.535	0.475	0.580	0.603	0.548	−0.025	−0.134	0.059	0.100
8	Staff	0.545	0.515	0.591	0.529	0.545	0.000	−0.054	0.084	−0.03
9	Value	0.769	0.760	0.799	0.769	0.774	−0.007	−0.018	0.032	−0.007
10	Transport	0.661	0.610	0.610	0.729	0.653	0.012	−0.065	−0.065	0.118
11	Cleanliness	0.716	0.753	0.828	0.773	0.767	−0.067	−0.019	0.079	0.007
12	Bed	0.729	0.763	0.783	0.675	0.737	−0.012	0.035	0.062	−0.085
13	Surroundings	0.614	0.561	0.713	0.693	0.645	−0.048	−0.130	0.105	0.073
14	Experience	0.620	0.621	0.665	0.534	0.610	0.017	0.018	0.090	−0.124
15	Price	0.516	0.515	0.486	0.503	0.505	0.021	0.019	−0.037	−0.004
16	Airport	0.502	0.507	0.549	0.533	0.523	−0.040	−0.030	0.049	0.020
17	Parking	0.507	0.556	0.534	0.457	0.514	−0.013	0.083	0.040	−0.11
18	Lobby	0.493	0.502	0.500	0.572	0.517	−0.046	−0.029	−0.033	0.108
19	Restaurant	0.510	0.499	0.481	0.536	0.507	0.008	−0.015	−0.050	0.057
20	Decor	0.556	0.574	0.648	0.434	0.553	0.005	0.039	0.171	−0.216

Mean: average performance of an attribute across the entire dataset.

R1: performance of an attribute in Reference dataset 1 (January 21, 2019–April 13, 2019).

R2: performance of an attribute in Reference dataset 2 (April 14, 2019–June 2, 2019).

Within: performance of an attribute during COVID-19 (January 21, 2020–April 13, 2020).

Recovering: performance of an attribute in the period of recovering from COVID-19 (April 14, 2020–June 2, 2020).

Difference weight was calculated according to the formula in Section 3.3.3.